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symptoms | What are the symptoms of Congenital primary aphakia ? | What are the signs and symptoms of Congenital primary aphakia? The Human Phenotype Ontology provides the following list of signs and symptoms for Congenital primary aphakia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Aniridia - Anterior segment of eye aplasia - Autosomal recessive inheritance - Congenital primary aphakia - Microphthalmia - Sclerocornea - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Neurocutaneous melanosis ? | Neurocutaneous melanosis (NCM) is a rare, non-inherited condition of the central nervous system. It is characterized by melanocytic nevi in both the skin and the brain. Two-thirds of people with NCM have giant congenital melanocytic nevi, and the remaining one-third have numerous lesions but no giant lesions. Most patients present with neurological features early in life, which can be secondary to intracranial hemorrhages (bleeding in the brain), impairment of cerebrospinal fluid circulation (fluid around the brain and spinal cord), and/or malignant transformation of the melanocytes. The prognosis of patients with symptomatic neurocutaneous melanosis is extremely poor, even in the absence of malignancy. Chemotherapy has been ineffective in the few patients in whom it has been tried. |
symptoms | What are the symptoms of Neurocutaneous melanosis ? | What are the signs and symptoms of Neurocutaneous melanosis? The Human Phenotype Ontology provides the following list of signs and symptoms for Neurocutaneous melanosis. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Cognitive impairment 90% Generalized hyperpigmentation 90% Hypertrichosis 90% Melanocytic nevus 90% Seizures 90% Thickened skin 90% Abnormality of neuronal migration 7.5% Abnormality of retinal pigmentation 7.5% Aplasia/Hypoplasia of the cerebellum 7.5% Arnold-Chiari malformation 7.5% Behavioral abnormality 7.5% Chorioretinal coloboma 7.5% Cranial nerve paralysis 7.5% Dandy-Walker malformation 7.5% EEG abnormality 7.5% Encephalitis 7.5% Hemiplegia/hemiparesis 7.5% Intracranial hemorrhage 7.5% Melanoma 7.5% Meningocele 7.5% Renal hypoplasia/aplasia 7.5% Syringomyelia 7.5% Thrombophlebitis 7.5% Arachnoid cyst 5% Choroid plexus papilloma 5% Hydrocephalus 5% Meningioma 5% Death in infancy - Mental deterioration - Numerous congenital melanocytic nevi - Sporadic - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Phacomatosis pigmentovascularis ? | Phacomatosis pigmentovascularis (PPV) is a skin and blood vessel disorder that is present from birth. Common signs and symptoms include port wine stain and pigmentary lesions, such as melanocytic nevi or epidermal nevi. A variety of classification systems have been proposed for PPV, largely depending on what type of pigmentary lesion is present. Around half of individuals with PPV have systemic disease, meaning that body systems other than the skin are affected. Systemic symptoms can vary greatly from person to person. PPV is not inherited, but is thought to be caused by a genetic phenomenon called twin spotting. |
symptoms | What are the symptoms of Phacomatosis pigmentovascularis ? | What are the signs and symptoms of phacomatosis pigmentovascularis? Characteristic signs and symptoms of phacomatosis pigmentovascularis (PPV), include port wine stain and pigmentary lesions. The port wine stain and pigmentary lesions are often extensive and can affect several areas of the body, including the face. Examples of associated pigmentary lesions, include: Melanocytic nevi Epidermal nevi In addition to the port wine stain and pigmentary lesions, other skin lesions are not uncommon, such as: Nevus anemicus Cafe-au-lait spots Mongolian spots Nevus of Ota Nevus of Ito Nevus spilus Around half of people with PPV have systemic involvement (i.e., other body systems are affected). Eye conditions such as ocular melanosis (also called ocular melanocytosis) is common. Ocular melanosis refers to a blue-gray pigmentation in the 'white of the eye' or sclerae. This condition often occurs along with nevus of Ota and may affect one or both eyes. The complications of nevus of Ota are glaucoma and melanoma, as a result people with nevus of Ota require careful examination and follow-up by an opthamologist. Other eye conditions reported in PPV include iris hamartomas, iris mammillations, and iris nodules. Some individuals with PPV also have Sturge-Weber syndrome or Klippel-Trenaunay syndrome. Signs and symptoms of Sturge-Weber syndrome include a large port-wine stain facial birthmark, blood vessel abnormalities in the brain called leptomeningeal angiomas, as well as glaucoma, seizures, muscle weakness, paralysis, developmental delay, and intellectual disability. Klippel-Trenaunay syndrome is characterized by a port-wine stain, abnormal overgrowth of soft tissues and bones, and vein malformations. You can learn more about Sturge-Weber syndrome on our Web site at the following link: http://rarediseases.info.nih.gov/GARD/Condition/7706/Sturge_Weber_syndrome.aspx You can learn more about Klippel-Trenaunay syndrome on the Genetic Home Reference Web site at the following link: http://ghr.nlm.nih.gov/condition/klippel-trenaunay-syndrome A variety of other symptoms have been reported in individual cases of PPV (e.g., primary lymphedema, renal angiomas, moyamoya disease, scoliosis, malignant colonic polyposis, hypoplastic larynx, multiple granular cell tumors, and selective IgA deficiency). Conditions associated with PPV can vary greatly from person to person and can be difficult to predict. |
causes | What causes Phacomatosis pigmentovascularis ? | What causes phacomatosis pigmentovascularis? Phacomatosis pigmentovascularis (PPV) is thought to occur as a result of a change in the arrangement of a small piece of genetic material in a developing embryo. Because of this change some of the baby's body cells carry two copies of recessive gene mutations while the majority of his or her body cells carry only one. Having two copies of the recessive gene mutations result in a diseased cell (and symptoms of PPV). This phenomenon is called twin spotting. PPV occurs by chance, it is not inherited, and affects only a subset of the body's cells. As a result risk to future offspring is very small. |
exams and tests | How to diagnose Phacomatosis pigmentovascularis ? | How might phacomatosis pigmentovascularis be diagnosed? Diagnosis of phacomatosis pigmentovascularis is based primarily on physical evaluation and appearence of the skin lesions. |
treatment | What are the treatments for Phacomatosis pigmentovascularis ? | How might phacomatosis pigmentovascularis be treated? If phacomatosis pigmentovascularis (PPV) is not associated with systemic complications (e.g., Sturge-Weber syndrome, Klippel-Trenaunay syndrome, eye conditions) it requires no treatment, however pulsed dye laser may improve the appearance of port wine stains and Q-switched laser the appearance of pigmentary nevus. Medical treatment of PPV with systemic complications requires individualized plans and often assistance from a team of specialists (e.g., opthamologist, neurologist, and vascular specialist). |
information | What is (are) Chronic inflammatory demyelinating polyneuropathy ? | Chronic inflammatory demyelinating polyneuropathy (CIDP) is a neurological disorder that causes progressive weakness and impaired sensory function in the legs and arms. Symptoms often include tingling or numbness (first in the toes and fingers); weakness of the arms and legs; loss of deep tendon reflexes; fatigue; and abnormal sensations. CIDP is thought to be caused by an abnormal immune response in which the immune system mistakenly attacks and damages the myelin sheath (the covering that protects nerve fibers) of the peripheral nerves. CIDP is closely related to Guillain-Barre syndrome (GBS) and is considered the "chronic counterpart" of GBS. Treatment may include corticosteroids, immunosuppressant drugs, plasma exchange, physiotherapy, and/or intravenous immunoglobulin (IVIG) therapy. |
symptoms | What are the symptoms of Chronic inflammatory demyelinating polyneuropathy ? | What are the signs and symptoms of Chronic inflammatory demyelinating polyneuropathy? The Human Phenotype Ontology provides the following list of signs and symptoms for Chronic inflammatory demyelinating polyneuropathy. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Acute demyelinating polyneuropathy - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Chronic inflammatory demyelinating polyneuropathy ? | What causes chronic inflammatory demyelinating polyneuropathy (CIDP)? The exact underlying cause of CIDP is unknown, but there is evidence to support that it is related to the immune system and may have multiple triggers. It is thought to be caused by an abnormal immune response in which the immune system mistakenly attacks and damages the myelin sheath (the covering that protects nerve fibers) of the peripheral nerves. However, no specific provoking antigens or other predisposing factors for CIDP have been identified. In several case reports, treatment with tumor necrosis factor-alpha inhibitors has been associated with the subsequent development of chronic demyelinating neuropathies. |
inheritance | Is Chronic inflammatory demyelinating polyneuropathy inherited ? | Is chronic inflammatory demyelinating polyneuropathy (CIDP) inherited? CIDP is not known to be inherited and is considered an acquired disorder. No clear genetic predisposition or other predisposing factors for CIDP have been identified. |
treatment | What are the treatments for Chronic inflammatory demyelinating polyneuropathy ? | How might chronic inflammatory demyelinating polyneuropathy (CIDP) be treated? The standard therapies for CIDP appear to be equally effective and include: intravenous immune globulin (IVIG) - adds large numbers of antibodies to the blood plasma to reduce the effect of the antibodies that are causing the problem glucocorticoids - help reduce inflammation and relieve symptoms plasma exchange - remove antibodies from the blood The treatment choice is influenced by the preference of the affected person, side effects, treatment cost, duration, ease of administration, and availability. Advantages and disadvantages of standard therapies may include the following: IVIG and plasma exchange may lead to a more rapid improvement in CIDP than glucocorticoid therapy, but are less likely than glucocorticoids to produce a remission IVIG is expensive, and its supply is sometimes limited Glucocorticoids are inexpensive, but chronic use is limited by common and important side effects Plasma exchange is expensive, invasive, and available only at specialized centers Other medications that suppress the immune system (immunosuppressants) may also be used. Physiotherapy may improve muscle strength, function and mobility. |
information | What is (are) Pyruvate kinase deficiency ? | Pyruvate kinase deficiency is a genetic blood disorder characterized by low levels of an enzyme called pyruvate kinase, which is used by red blood cells. Without pyruvate kinase, red blood cells break down too easily, resulting in low levels of these cells (hemolytic anemia). The signs and symptoms of the disease may vary greatly from person to person. However, they usually include jaundice, enlargement of the spleen, and mild or severe hemolysis (red cell breakdown), leading to anemia. In some cases, the problems may first appear while in utero, causing a condition in which abnormal amounts of fluid build up in two or more body areas of the fetus (hydrops fetalis). Newborns may present with prolonged jaundice and anemia. Older children may be pale (due to anemia) and have intermittent episodes of jaundice. Mild cases may escape detection until adulthood. Although the anemia tends to stabilize in adulthood, episodes of anemia may occur with acute infections, stress, and pregnancy. Pyruvate kinase deficiency is caused by a mutation in the PKLR gene and is inherited in an autosomal recessive fashion. Treatment remains supportive rather than curative. |
symptoms | What are the symptoms of Pyruvate kinase deficiency ? | What are the signs and symptoms of Pyruvate kinase deficiency? The signs and symptoms of pyruvate kinase deficiency may vary greatly from person to person, but usually include the breakdown of red blood cells resulting in hemolytic anemia, a yellowing of the whites of the eyes (icterus), fatigue, lethargy, recurrent gallstones, jaundice, and pale skin (pallor). In more severe cases, the first signs and symptoms may appear in utero in the form of hydrops fetalis, a condition in which abnormal amounts of fluid build up in two or more body areas of the fetus. Newborns may present with prolonged jaundice and anemia. Older children may be pale (due to anemia) and have intermittent episodes of jaundice. Mild cases may escape detection until adulthood. Although the anemia tends to stabilize in adulthood, episodes of anemia may occur with acute infections, stress, and pregnancy. The Human Phenotype Ontology provides the following list of signs and symptoms for Pyruvate kinase deficiency. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Intrauterine growth retardation 5% Nonimmune hydrops fetalis 5% Abnormality of the amniotic fluid - Autosomal recessive inheritance - Cholecystitis - Cholelithiasis - Chronic hemolytic anemia - Increased red cell osmotic fragility - Jaundice - Reticulocytosis - Splenomegaly - Unconjugated hyperbilirubinemia - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Pyruvate kinase deficiency ? | What causes pyruvate kinase deficiency? In most cases, pyruvate kinase deficiency is caused by mutations in the PKLR gene. More than 100 different mutation in the PKLR gene have been detected. Medical conditions, such as acute leukemia, preleukemia, and refractory sideroblastic anemia, as well as complications from chemotherapy, can cause an acquired pyruvate kinase deficiency. This type is more common and milder than the hereditary type. |
inheritance | Is Pyruvate kinase deficiency inherited ? | How is pyruvate kinase deficiency inherited? Pyruvate kinase deficiency is inherited in an autosomal recessive fashion, which means that a child must inherit a gene with a disease-causing mutation from both parents to develop the disorder. The gene that causes pyruvate kinase deficiency is called the PKLR gene that is located on chromosome 1q21. Although the inheritance is clinically autosomal recessive, most affected individuals are compound heterozygous for two different mutant alleles. It is estimated that approximatly 1 in 100 people carry one copy of a disease-causing mutation in the PKLR gene. Carriers of one non-working PKLR gene usually have moderatly reduced levels of pyruvate kinase activity but do not develop clinical symptoms. It is possible that carriers of a mutant pyruvate kinase genemay have a protective advantage against malaria in areas where the disease is endemic. |
exams and tests | How to diagnose Pyruvate kinase deficiency ? | Is genetic testing available for pyruvate kinase deficiency? Yes. GeneTests lists laboratories offering clinical genetic testing for this condition. Clinical genetic tests are ordered to help diagnose an affected person or other family members and to aid in decisions regarding medical care or reproductive issues. We recommend that you talk to your health care provider or a genetic professional to learn more about your testing options. |
treatment | What are the treatments for Pyruvate kinase deficiency ? | How might pyruvate kinase deficiency be treated? Mild cases require no treatment. People with severe anemia may need blood transfusions. In newborns with dangerous levels of jaundice, a health care provider may recommend an exchange transfusion. Surgical removal of the spleen (splenectomy) may also be necessary to help reduce the destruction of red blood cells. However, this does not help in all cases. With small children, this is delayed as long as possible to allow the immune system to mature. Other treatment is symptomatic and supportive. Someone who had a splenectomy should receive the pneumococcal vaccine at recommended intervals. They also should receive preventive antibiotics until age 5. An article from eMedicine Journal provides additional information on treatment for pyruvate kinase deficiency at the following link. You may need to register to view the article, but registration is free. http://emedicine.medscape.com/article/125096-treatment#showall |
information | What is (are) Pseudoachondroplasia ? | Pseudoachondroplasia is an inherited disorder of bone growth which is characterized by short stature. Other features include short arms and legs, a waddling walk, early-onset joint pain (osteoarthritis), and a limited range of motion at the elbows and hips. Intelligence, facial features and head size are normal. Pseudoachondroplasia is caused by mutations in the COMP gene. This condition is inherited in an autosomal dominant pattern. |
symptoms | What are the symptoms of Pseudoachondroplasia ? | What are the signs and symptoms of Pseudoachondroplasia? The Human Phenotype Ontology provides the following list of signs and symptoms for Pseudoachondroplasia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the hip bone 90% Abnormality of the metacarpal bones 90% Abnormality of the metaphyses 90% Brachydactyly syndrome 90% Delayed skeletal maturation 90% Micromelia 90% Arthralgia 50% Gait disturbance 50% Hyperlordosis 50% Joint hypermobility 50% Limitation of joint mobility 50% Osteoarthritis 50% Platyspondyly 50% Scoliosis 50% Short toe 50% Genu valgum 7.5% Genu varum 7.5% Hypoplasia of the odontoid process 7.5% Kyphosis 7.5% Atlantoaxial dislocation - Autosomal dominant inheritance - Beaking of vertebral bodies - Carpal bone hypoplasia - Cervical cord compression - Childhood onset short-limb short stature - Degenerative joint disease - Delayed epiphyseal ossification - Disproportionate short-limb short stature - Flared femoral metaphysis - Fragmented epiphyses - Fragmented, irregular epiphyses - Genu recurvatum - Irregular carpal bones - Joint laxity - Ligamentous laxity - Limited elbow extension - Limited hip extension - Lumbar hyperlordosis - Radial metaphyseal irregularity - Sensory neuropathy - Short distal phalanx of finger - Short long bone - Short metacarpal - Small epiphyses of the phalanges of the hand - Spatulate ribs - Ulnar deviation of the hand - Ulnar deviation of the wrist - Ulnar metaphyseal irregularity - Waddling gait - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. What are the features of pseudoachondroplasia? All individuals with pseudoachondroplasia have short stature. While affected individuals are typically of normal length at birth, their growth rate tends to fall below the standard growth curve by age two. The average height of an adult male is 3 feet, 11 inches and the average height of an adult female is 3 feet, 9 inches. Other features of pseudoachondroplasia include short arms and legs, a waddling walk, early-onset joint pain (osteoarthritis), and a limited range of motion at the elbows and hips. Some individuals develop abnormal curvatures of the spine (scoliosis and/or lordosis) during childhood. People with pseudoachondroplasia have normal facial features, head size, and intelligence. |
inheritance | Is Pseudoachondroplasia inherited ? | How is pseudoachondroplasia inherited? Pseudoachondroplasia is inherited in an autosomal dominant pattern, which means having one altered copy of the COMP gene in each cell is enough to cause the disorder. In some cases, an affected person inherits the mutation from one affected parent. Other cases result from new mutations in the gene and occur in people with no history of the disorder in their family. |
information | What is (are) Congenital sucrase-isomaltase deficiency ? | Congenital sucrase-isomaltase deficiency (CSID) is a genetic condition that affects a person's ability to digest certain sugars. People with this condition cannot break down the sugars sucrose (a sugar found in fruits, and also known as table sugar) and maltose (the sugar found in grains). CSID usually becomes apparent after an infant begins to consume fruits, juices, and grains. After ingestion of sucrose or maltose, an affected child will typically experience stomach cramps, bloating, excess gas production, and diarrhea. These digestive problems can lead to failure to thrive and malnutrition. Most affected children are better able to tolerate sucrose and maltose as they get older. CSID is inherited in an autosomal recessive pattern and is caused by mutations in the SI gene. |
symptoms | What are the symptoms of Congenital sucrase-isomaltase deficiency ? | What are the signs and symptoms of Congenital sucrase-isomaltase deficiency? Affected infants usually develop symptoms soon after they first ingest sucrose, which is found in modified milk formulas, fruits, or starches. Symptoms may include explosive, watery diarrhea resulting in abnormally low levels of body fluids (dehydration), abdominal swelling (distension), and/or abdominal discomfort. In addition, some affected infants may experience malnutrition, resulting from malabsorption of essential nutrients, and/or failure to thrive, resulting from nutritional deficiencies. In some cases, individuals may exhibit irritability; colic; abrasion and/or irritation (excoriation) of the skin on the buttocks as a result of prolonged diarrhea episodes; and/or vomiting. Symptoms of this disorder vary among affected individuals, but are usually more severe in infants and young children than in adults. Symptoms exhibited in infants and young children are usually more pronounced than those of the affected adults because the diet of younger individuals often includes a higher carbohydrate intake. In addition, the time it takes for intestinal digestion is less in infants or young children. The Human Phenotype Ontology provides the following list of signs and symptoms for Congenital sucrase-isomaltase deficiency. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of metabolism/homeostasis - Autosomal recessive inheritance - Diarrhea - Malabsorption - Nephrolithiasis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
exams and tests | How to diagnose Congenital sucrase-isomaltase deficiency ? | How is congenital sucrase-isomaltase deficiency (CSID) diagnosed? CSID can be diagnosed through clinical evaluation, detailed patient history, and tolerance lab tests. Blood tests can be done to look for a flat serum glucose curve after patients are given a dose of sucrose. In addition, blood and urine samples may test positive for sucrose, maltose, or palatinose (a form of maltose) if used during tolerance testing. The feces may also show sucrose, glucose, and fructose, and an acid pH level of below 5.0 or 6.0. CSID can be confirmed by taking a small sample of tissue (biopsy) from the small intestine and measuring the activity of the enzyme called sucrase-isomaltase. Other tests may include a sucrose hydrogen breath test in which an abnormally high level of hydrogen will be detected in the breath of an affected individual after sucrose ingestion. |
treatment | What are the treatments for Congenital sucrase-isomaltase deficiency ? | How might congenital sucrase-isomaltase deficiency (CSID) be treated? CSID is typically treated by modifying a person's diet to reduce the amount of sucrose. Because many foods contain sucrose and other complex sugars, it can be difficult to completely remove sucrase from the diet. Sucraid is an oral medication containing the enzyme that does not work properly in people with this condition. By taking this medication, those with CSID can eat sucrose-containing foods because this enzyme will break down sucrose. This medication must be taken with each meal or snack. |
symptoms | What are the symptoms of Anti-plasmin deficiency, congenital ? | What are the signs and symptoms of Anti-plasmin deficiency, congenital? The Human Phenotype Ontology provides the following list of signs and symptoms for Anti-plasmin deficiency, congenital. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal recessive inheritance - Bruising susceptibility - Hemothorax - Joint hemorrhage - Persistent bleeding after trauma - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Scleroderma ? | Scleroderma is an autoimmune disorder that involves changes in the skin, blood vessels, muscles, and internal organs. There are two main types: localized scleroderma, which affects only the skin; and systemic scleroderma, which affects the blood vessels and internal organs, as well as the skin. These two main types also have different sub-types. Localized scleroderma can be divided in: Linear scleroderma (en coup de sabre) Morphea (localized, generalized, guttata and deep). Systemic scleroderma is subdivided in: Diffuse cutaneous systemic sclerosis Limited cutaneous systemic sclerosis (which includes CREST syndrome) Limited Systemic Sclerosis (or systemic sclerosis sine scleroderm). There are also cases of environmentally-induced scleroderma and cases where scleroderma is part of other rheumatic disorders, like rheumatoid arthritis, lupus or Sjogren syndrome. The underlying cause of scleroderma is currently unknown; however, some scientists suspect that it may be related to a buildup of collagen in the skin and other organs due to an abnormal immune system response. There is no cure, but various treatments can relieve symptoms. |
symptoms | What are the symptoms of Scleroderma ? | What are the signs and symptoms of Scleroderma? The Human Phenotype Ontology provides the following list of signs and symptoms for Scleroderma. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the stomach 90% Acrocyanosis 90% Arthralgia 90% Arthritis 90% Autoimmunity 90% Cheilitis 90% Chest pain 90% Dry skin 90% Gangrene 90% Gingivitis 90% Lack of skin elasticity 90% Muscle weakness 90% Myalgia 90% Nausea and vomiting 90% Restrictive lung disease 90% Skin ulcer 90% Xerostomia 90% Abdominal pain 50% Abnormal pattern of respiration 50% Abnormal tendon morphology 50% Abnormality of the pericardium 50% Arrhythmia 50% Bowel incontinence 50% Chondrocalcinosis 50% Coronary artery disease 50% Cranial nerve paralysis 50% Decreased nerve conduction velocity 50% Feeding difficulties in infancy 50% Hyperkeratosis 50% Hypopigmented skin patches 50% Malabsorption 50% Mucosal telangiectasiae 50% Myositis 50% Nephropathy 50% Pulmonary fibrosis 50% Recurrent urinary tract infections 50% Telangiectasia of the skin 50% Urticaria 50% Weight loss 50% Behavioral abnormality 7.5% Cirrhosis 7.5% Congestive heart failure 7.5% Erectile abnormalities 7.5% Gastrointestinal hemorrhage 7.5% Gingival bleeding 7.5% Hematuria 7.5% Hypertrophic cardiomyopathy 7.5% Memory impairment 7.5% Narrow mouth 7.5% Neoplasm of the lung 7.5% Osteolysis 7.5% Osteomyelitis 7.5% Peripheral neuropathy 7.5% Pulmonary hypertension 7.5% Pulmonary infiltrates 7.5% Renal insufficiency 7.5% Seizures 7.5% Skeletal muscle atrophy 7.5% Tracheoesophageal fistula 7.5% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
treatment | What are the treatments for Scleroderma ? | How might scleroderma be treated? Currently, there is not a cure for scleroderma, however treatments are available to relieve symptoms and limit damage. Treatment will vary depending on your symptoms. |
information | What is (are) Hypotrichosis simplex ? | Hypotrichosis simplex is a rare form of hereditary hair loss without other abnormalities. Affected individuals typically show normal hair at birth, but experience hair loss and thinning of the hair shaft that starts during early childhood and progresses with age. Hypotrichosis simplex can be divided into 2 forms: the scalp-limited form and the generalized form, in which all body hair is affected. The progressive thinning of the hair shaft is a typical feature of androgenetic alopecia. Hypotrichosis simplex can be inherited either as an autosomal dominant or autosomal recessive trait. Some cases are caused by mutations in the APCDD1 gene on chromosome 18p11. To date, there is no treatment for this condition. |
symptoms | What are the symptoms of Hypotrichosis simplex ? | What are the signs and symptoms of Hypotrichosis simplex? The Human Phenotype Ontology provides the following list of signs and symptoms for Hypotrichosis simplex. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Hypotrichosis 100% Abnormality of the eyelashes 90% Alopecia 90% Aplasia/Hypoplasia of the eyebrow 90% Congenital, generalized hypertrichosis 50% Woolly hair 50% Hyperkeratosis 7.5% Pruritus 7.5% Autosomal dominant inheritance - Autosomal recessive inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
treatment | What are the treatments for Hypotrichosis simplex ? | Is there treatment for hypotrichosis simplex? Is there hope for hair growth in the future? Individuals with hypotrichosis simplex experience a gradual loss of scalp hair that begins during the middle of the first decade and results in almost complete loss of hair by the third decade. A few sparse, fine, short hairs may remain in some individuals. There is currently no treatment for hypotrichosis simplex. |
symptoms | What are the symptoms of Angioma serpiginosum, autosomal dominant ? | What are the signs and symptoms of Angioma serpiginosum, autosomal dominant? The Human Phenotype Ontology provides the following list of signs and symptoms for Angioma serpiginosum, autosomal dominant. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Hypermelanotic macule 90% Telangiectasia of the skin 90% Abnormality of the retinal vasculature 7.5% Verrucae 7.5% Autosomal dominant inheritance - Hyperkeratosis - Juvenile onset - Slow progression - Sporadic - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of X-linked hypohidrotic ectodermal dysplasia ? | What are the signs and symptoms of X-linked hypohidrotic ectodermal dysplasia? The Human Phenotype Ontology provides the following list of signs and symptoms for X-linked hypohidrotic ectodermal dysplasia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal hair quantity 90% Delayed eruption of teeth 90% Depressed nasal ridge 90% Hypohidrosis 90% Microdontia 90% Frontal bossing 50% Anterior hypopituitarism 7.5% Hypertension 7.5% Short distal phalanx of finger 7.5% Type I diabetes mellitus 7.5% Abnormality of oral mucosa - Absent eyebrow - Absent nipple - Anhidrosis - Aplasia/Hypoplastia of the eccrine sweat glands - Brittle hair - Concave nail - Conical tooth - Depressed nasal bridge - Dry skin - Dysphonia - Eczema - Everted upper lip vermilion - Fever - Heat intolerance - Heterogeneous - Hoarse voice - Hypodontia - Hypohidrotic ectodermal dysplasia - Hypoplasia of the maxilla - Hypoplastic nipples - Hypoplastic-absent sebaceous glands - Hypotrichosis - Periorbital hyperpigmentation - Periorbital wrinkles - Prominent supraorbital ridges - Respiratory difficulties - Short chin - Short nose - Soft skin - Sparse eyebrow - Sparse eyelashes - Taurodontia - Thick vermilion border - Thin skin - Underdeveloped nasal alae - X-linked recessive inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Polycythemia vera ? | Polycythemia vera (PV) is a condition characterized by an increased number of red blood cells in the bloodstream. Affected people may also have excess white blood cells and platelets. These extra cells cause the blood to be thicker than normal, increasing the risk for blood clots that can block blood flow in arteries and veins. People with PV have an increased risk of deep vein thrombosis which can cause a pulmonary embolism, heart attack, and stroke. Most cases of PV are not inherited and are acquired during a person's lifetime. In rare cases, the risk for PV runs in families and may be inherited in an autosomal dominant manner. The condition has been associated with mutations in the JAK2 and TET2 genes. |
symptoms | What are the symptoms of Polycythemia vera ? | What are the signs and symptoms of Polycythemia vera? The Human Phenotype Ontology provides the following list of signs and symptoms for Polycythemia vera. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abdominal pain 90% Acute leukemia 90% Bruising susceptibility 90% Coronary artery disease 90% Epistaxis 90% Gastrointestinal hemorrhage 90% Gingival bleeding 90% Hepatomegaly 90% Migraine 90% Myelodysplasia 90% Splenomegaly 90% Tinnitus 90% Vertigo 90% Weight loss 90% Arthralgia 50% Respiratory insufficiency 50% Arterial thrombosis 7.5% Cerebral ischemia 7.5% Portal hypertension 7.5% Pruritus 7.5% Thrombophlebitis 7.5% Autosomal dominant inheritance - Budd-Chiari syndrome - Cerebral hemorrhage - Increased hematocrit - Increased hemoglobin - Increased megakaryocyte count - Increased red blood cell mass - Leukocytosis - Somatic mutation - Sporadic - Thrombocytopenia - Thrombocytosis - Thromboembolism - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
inheritance | Is Polycythemia vera inherited ? | Is polycythemia vera inherited? Most cases of polycythemia vera (PCV) are not inherited from a parent and are acquired during a person's lifetime. The condition is associated with genetic changes (mutations) that are somatic, which means they occur in cells of the body but not in egg and sperm cells. In rare cases, the risk to develop PCV runs in families and sometimes appears to have an autosomal dominant pattern of inheritance. This means that only one altered copy of a gene in each cell is enough to give a person an increased risk for PCV. In other words, while an increased risk to develop PCV may be inherited, the condition itself is not inherited. |
treatment | What are the treatments for Polycythemia vera ? | What treatments are available for itching related to polycythemia vera? There are several treatments for the itching (pruritus) related to polycythemia vera (PV). No single treatment has been found to be effective for all affected individuals. For mild cases, treatment may include avoiding triggers of itching and dry skin, or controlling the temperature of the environment and bathing water. Several other treatments are available for more severe itching or for itching the does not respond to initial treatments. Interferon-alpha has been found to be effective for reducing itching in a majority of individual with PV who received this therapy; however, this medication can have significant side effects. Selective serotonin reuptake inhibitors (SSRIs), typically used to treat depression, may reducing itching for some individuals with PV.. Phototherapy, antihistamines, and phlebotomy have also been attempted, with mixed results. Additionally, if a genetic cause of polycythemia vera is know, medications targeted to the causative gene - such as JAK or mTor inhibitors - may be helpful in reducing itching. |
symptoms | What are the symptoms of Aortic arch anomaly - peculiar facies - intellectual disability ? | What are the signs and symptoms of Aortic arch anomaly - peculiar facies - intellectual disability? The Human Phenotype Ontology provides the following list of signs and symptoms for Aortic arch anomaly - peculiar facies - intellectual disability. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Broad forehead 90% Carious teeth 90% Cognitive impairment 90% Convex nasal ridge 90% Downturned corners of mouth 90% Facial asymmetry 90% Low-set, posteriorly rotated ears 90% Macrotia 90% Narrow mouth 90% Overriding aorta 90% Prominent nasal bridge 90% Triangular face 90% Arteriovenous malformation 50% Microcephaly 50% Abnormality of the hip bone 7.5% Behavioral abnormality 7.5% Genu varum 7.5% Hypoplasia of the zygomatic bone 7.5% Intrauterine growth retardation 7.5% Mandibular prognathia 7.5% Muscular hypotonia 7.5% Abnormal facial shape - Autosomal dominant inheritance - Intellectual disability - Right aortic arch with mirror image branching - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Reducing body myopathy ? | What are the signs and symptoms of Reducing body myopathy? The Human Phenotype Ontology provides the following list of signs and symptoms for Reducing body myopathy. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Dilated cardiomyopathy 5% Areflexia - Elevated serum creatine phosphokinase - Flexion contracture - Frequent falls - Hyperlordosis - Hyporeflexia - Increased variability in muscle fiber diameter - Kyphosis - Proximal muscle weakness - Rapidly progressive - Respiratory insufficiency due to muscle weakness - Scoliosis - Short neck - Spinal rigidity - X-linked dominant inheritance - X-linked inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Pineal cyst ? | Pineal cysts are cysts of the pineal gland which is a small organ in the brain that produces melatonin (a sleep-regulating hormone). Pineal cysts are relatively common and may be found by chance in up to 10% of people undergoing CT or MRI brain imaging. The exact cause of pineal cysts is unknown. Most people with pineal cysts do not have any signs or symptoms. Rarely, a pineal cyst may cause headaches, hydrocephalus, eye movement abnormalities, and Parinaud syndrome. Treatment is usually only considered when a cyst is causing symptoms, in which case surgery, stereotactic aspiration or endoscopic treatment may be recommended. |
symptoms | What are the symptoms of Pineal cyst ? | What are the signs and symptoms of pineal cysts? People with pineal cysts generally do not have any signs or symptoms. Occasionally, pineal cysts may cause headaches, hydrocephalus, disturbances in vision (gaze palsy), Parinaud syndrome, and vertigo, in which case they are called symptomatic pineal cysts. Although rare, people with symptomatic pineal cysts may have other symptoms such as difficulty moving (ataxia); mental and emotional disturbances; seizures; sleep (circadian rhythm) troubles; hormonal imbalances that may cause precocious puberty; or secondary parkinsonism. |
causes | What causes Pineal cyst ? | What causes pineal cysts? The exact cause of pineal cysts is unknown. However, some studies suggest that bleeding in the pineal region or hormonal influences may play a role in the development and progression of pineal cysts. |
treatment | What are the treatments for Pineal cyst ? | How might pineal cysts be treated? The best treatment options for pineal cysts depend on many factors, including the size of the cyst and whether or not it is associated with symptoms. For example, people with pineal cysts that do not cause symptoms may not require any form of treatment. However, they may need to have regular check-ups with a physician and follow up imaging if they have a large cyst (greater than 10-14 mm) or develop symptoms that could be related to the cyst. Treatment is often recommended for those individuals with pineal cysts that cause hydrocephalus; neurological symptoms such as headache or disturbance of vision; or enlargement of the cyst over time. Treatment may include surgery to remove the cyst, sometimes followed by the placement of a ventriculoperitoneal shunt. Aspiration of the contents of the cyst using ultrasound guidance has been explored as an alternative approach to surgery, and more recently, endoscopic procedures have been used. Radiation therapy may be recommended for cysts that recur after treatment. What is the appropriate follow-up for a pineal cyst found incidentally on MRI? There is limited information about what happens to a pineal cyst over time. Several studies have shown that most pineal cysts remain stable and do not increase in size or cause symptoms later in life. One study found that larger cysts were more likely to decrease in size over time, and there is currently no evidence that larger cysts are more likely to cause symptoms. Because guidelines for management depend on an understanding of the typical course of a condition, and currently there is limited information about pineal cysts, there is some debate about the most appropriate way to manage these cysts. Some studies do not recommend repeated magnetic resonance imaging (MRI) of the cyst. Other studies state that repeated imaging of a pineal cyst is not required. Another approach is for individuals with a pineal cyst to have regular check-ups with their personal doctor; if at any point new symptoms arise that may be related to the pineal cyst, repeat imaging should be done. |
information | What is (are) Huntington disease ? | Huntington disease (HD) is an inherited condition that causes progressive degeneration of neurons in the brain. Signs and symptoms usually develop between ages 35 to 44 years and may include uncontrolled movements, loss of intellectual abilities, and various emotional and psychiatric problems. People with HD usually live for about 15 to 20 years after the condition begins. It is caused by changes (mutations) in the HTT gene and is inherited in an autosomal dominant manner. Treatment is based on the symptoms present in each person and may include various medications. There is also a less common, early-onset form of HD which begins in childhood or adolescence. For more information on this form, please visit GARD's juvenile Huntington disease Web page. |
symptoms | What are the symptoms of Huntington disease ? | What are the signs and symptoms of Huntington disease? Huntington disease (HD) is a progressive disorder that causes motor, cognitive, and psychiatric signs and symptoms. On average, most people begin developing features of HD between ages 35 and 44. Signs and symptoms vary by stage and may include: Early stage: Behavioral disturbances Clumsiness Moodiness Irritability Paranoia Apathy Anxiety Hallucinations Abnormal eye movements Depression Impaired ability to detect odors Middle stage: Dystonia Involuntary movements Trouble with balance and walking Chorea with twisting and writhing motions Unsteady gait (style of walking) Slow reaction time General weakness Weight loss Speech difficulties Stubbornness Late stage: Rigidity (continual tension of the muscles) Bradykinesia (difficulty initiating and continuing movements) Severe chorea Serious weight loss Inability to speak Inability to walk Swallowing problems Inability to care for oneself There is also a less common, early-onset form of HD which begins in childhood or adolescence. For more information on this form, please visit GARD's juvenile Huntington disease Web page. The Human Phenotype Ontology provides the following list of signs and symptoms for Huntington disease. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of movement 50% Abnormality of the voice 50% Behavioral abnormality 50% Cerebral cortical atrophy 50% Developmental regression 50% EEG abnormality 50% Hypertonia 50% Rigidity 7.5% Abnormality of eye movement - Autosomal dominant inheritance - Bradykinesia - Chorea - Dementia - Depression - Gliosis - Hyperreflexia - Neuronal loss in central nervous system - Personality changes - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Huntington disease ? | What causes Huntington disease? Huntington disease (HD) is caused by a change (mutation) in the HTT gene. This gene gives instructions for making a protein called huntingtin. The exact function of this protein is unclear, but it appears to be important to nerve cells (neurons) in the brain. The HTT gene mutation that causes HD involves a DNA segment known as a CAG trinucleotide repeat. This segment is made up of three DNA building blocks that repeat multiple times in a row. The CAG segment in a normal HTT gene repeats about 10 to 35 times. In people with HD, it may repeat from 36 to over 120 times. People with 36 to 39 CAG repeats (an intermediate size) may or may not develop HD, while people with 40 or more repeats almost always develop HD. An increased number of CAG repeats leads to an abnormally long version of the huntingtin protein. The long protein is then cut into smaller, toxic pieces that end up sticking together and accumulating in neurons. This disrupts the function of the neurons, ultimately causing the features of HD. |
inheritance | Is Huntington disease inherited ? | How is Huntington disease inherited? Huntington disease (HD) is inherited in an autosomal dominant manner. This means that having a change (mutation) in only one of the 2 copies of the HTT gene is enough to cause the condition. When a person with HD has children, each child has a 50% (1 in 2) chance to inherit the mutated gene and develop the condition. Most people with HD have an affected parent. The family history can sometimes appear negative for various reasons even though a parent carries, or carried, a mutation in the HTT gene. In rare cases, HD is caused by a new (de novo) mutation in the HTT gene, in which case the disease occurs for the first time in the affected person and is not inherited from a parent. As HD is passed through generations, the size of the mutation in the HTT gene (called a trinucleotide repeat) often increases. A longer repeat in the HTT gene may cause earlier onset of symptoms. This phenomenon is called anticipation. |
exams and tests | How to diagnose Huntington disease ? | Is genetic testing available for Huntington disease? Yes. Testing of adults at risk for Huntington disease (HD) who have no symptoms of the disease is called predictive testing. Whether to have predictive testing requires careful thought, including pre-test and post-test genetic counseling. This is particularly important because there is currently no cure. Furthermore, predictive testing cannot accurately predict the age a person with an HD mutation will develop symptoms, the severity or type of symptoms they will experience, or the future rate of disease progression. A person may want to have predictive testing because they feel they need to know, or to make personal decisions involving having children, finances, and/or career planning. Other people decide they do not want to know whether they will develop HD. Testing is appropriate to consider in symptomatic people of any age in a family with a confirmed diagnosis of HD. However, testing of asymptomatic people younger than age 18 is not considered appropriate. A main reason is that it takes away the choice of whether the person wants to know, while there is no major benefit to knowing at that age. People who are interested in learning more about genetic testing for HD should speak with a genetics professional. How is Huntington disease diagnosed? A diagnosis of Huntington disease is typically suspected in people with characteristic signs and symptoms of the condition and a family history consistent with autosomal dominant inheritance. The diagnosis can then be confirmed with genetic testing that identifies a specific type of change (mutation) in the HTT gene. |
treatment | What are the treatments for Huntington disease ? | How might Huntington disease be treated? Unfortunately, there is currently no cure for Huntington disease (HD). The current goal of treatment is to slow down the course of the disease and help affected people function for as long and as comfortably as possible. Current treatment strategies involve the use of various medications to treat specific symptoms such as abnormal movements and behaviors. Depression and suicide are more common among affected people, so caregivers should monitor for associated symptoms and seek help if necessary. As symptoms of the disease worsen, affected people need more assistance, supervision, and care. |
symptoms | What are the symptoms of Multiple epiphyseal dysplasia 2 ? | What are the signs and symptoms of Multiple epiphyseal dysplasia 2? The Human Phenotype Ontology provides the following list of signs and symptoms for Multiple epiphyseal dysplasia 2. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of epiphysis morphology 90% Osteoarthritis 90% Abnormality of the hip bone 50% Arthralgia 50% Gait disturbance 50% Limitation of joint mobility 50% Micromelia 50% Short stature 50% Genu valgum 7.5% Genu varum 7.5% Autosomal dominant inheritance - Epiphyseal dysplasia - Flattened epiphysis - Irregular epiphyses - Knee osteoarthritis - Mild short stature - Short palm - Waddling gait - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Holoprosencephaly, recurrent infections, and monocytosis ? | What are the signs and symptoms of Holoprosencephaly, recurrent infections, and monocytosis? The Human Phenotype Ontology provides the following list of signs and symptoms for Holoprosencephaly, recurrent infections, and monocytosis. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal facial shape - Abnormality of the pinna - Agenesis of corpus callosum - Autosomal dominant inheritance - Brachycephaly - Brachydactyly syndrome - Cryptorchidism - Epicanthus - Failure to thrive - Holoprosencephaly - Intellectual disability, progressive - Intellectual disability, severe - Inverted nipples - Microcephaly - Micropenis - Monocytosis - Recurrent infections - Recurrent skin infections - Short finger - Short toe - Sloping forehead - Tapered finger - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Blue rubber bleb nevus syndrome ? | Blue rubber bleb nevus syndrome is a condition in which the blood vessels do not develop properly in an area of the skin or other body organ (particularly the intestines). The malformed blood vessels appear as a spot or lesion called a nevus. The underlying blood vessel malformations are present from birth even though the nevus may not be visible until later in life. The size, number, location, and severity of these malformations vary from person to person. Affected areas on the skin can be painful or tender to the touch and may be prone to sweating (hyperhidrosis). Nevi in the intestines can bleed spontaneously and cause anemia or more serious complications. Other symptoms vary depending on the organ affected. Treatment is tailored to the individual depending on the location and symptoms caused by the affected areas. |
symptoms | What are the symptoms of Blue rubber bleb nevus syndrome ? | What are the signs and symptoms of Blue rubber bleb nevus syndrome? Symptoms and severity of blue rubber bleb nevus syndrome varies greatly from person to person. In general, blue rubber bleb nevus syndrome is characterized by skin spots (nevi) that may be few to hundreds in number. Size tends varies from millimeters to several centimeters in length. These nevi are made of blood vessels and are spongy, meaning they can easily be pressed upon. When pressure is released, they refill with blood and regain their original shape. They tend to be blue but can vary in color and shape. The surface of the nevi may be smooth or wrinkled and they often have a rubbery feel. They do not tend to bleed spontaneously, but are fragile and will bleed if injured. They may be tender to the touch. They may also be associated with increased sweating in the area of the skin legions. The number and size of legions may worsen with advancing age. Nevi may also be found in the intestines (particularly the small intestine) in individuals with blue rubber bleb nevus syndrome. These nevi can bleed spontaneously causing anemia. Most bleeding from the gastrointestinal tract is slow; however, sudden quick bleeding (hemorrhage) is possible. Other serious complications of gastrointestinal legions may include intussusception, bowel infarction, and even death. Blue rubber bleb nevus syndrome can affect other body organs as well. Nevi have been reported in the skull, central nervous system, thyroid, parotid, eyes, mouth, lungs, pleura, pericardium, musculoskeletal system, peritoneal cavity, mesentery, kidney, liver, spleen, penis, vulva, and bladder. Nevi may also put pressure on joints, bones, or feet, which may make walking difficult or limit range of motion. The Human Phenotype Ontology provides the following list of signs and symptoms for Blue rubber bleb nevus syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of coagulation 90% Arteriovenous malformation 90% Bone pain 90% Cavernous hemangioma 90% Skin rash 90% Visceral angiomatosis 90% Gastrointestinal hemorrhage 50% Intestinal malrotation 50% Gastrointestinal infarctions 7.5% Microcytic anemia 7.5% Abnormality of the liver - Abnormality of the mouth - Abnormality of the respiratory system - Autosomal dominant inheritance - Cerebellar medulloblastoma - Chronic disseminated intravascular coagulation - Hemangioma - Hypermelanotic macule - Intestinal bleeding - Intussusception - Iron deficiency anemia - Pathologic fracture - Rectal prolapse - Thrombocytopenia - Volvulus - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Blue rubber bleb nevus syndrome ? | What causes blue rubber bleb nevus syndrome? Currently the cause of blue rubber bleb syndrome is not known. |
treatment | What are the treatments for Blue rubber bleb nevus syndrome ? | How might blue rubber bleb nevus syndrome be treated? Treatment of blue rubber bleb nevus syndrome varies depending on the severity and location of the affected areas. Skin spots do not usually require treatment, but some individuals with this condition may want treatment for cosmetic reasons or if the location of the nevus causes discomfort or affects normal function. Bleeding in the intestines may be treated with iron supplements and blood transfusions when necessary. Surgery to remove an affected area of bowel may be recommended for repeated or severe bleeding (hemorrhage). |
symptoms | What are the symptoms of Preaxial polydactyly type 2 ? | What are the signs and symptoms of Preaxial polydactyly type 2? The Human Phenotype Ontology provides the following list of signs and symptoms for Preaxial polydactyly type 2. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Duplication of thumb phalanx 90% Finger syndactyly 90% Opposable triphalangeal thumb 90% Preaxial hand polydactyly 90% Triphalangeal thumb 90% Duplication of phalanx of hallux 75% Preaxial foot polydactyly 75% Abnormality of the metacarpal bones 50% Postaxial hand polydactyly 50% Toe syndactyly 50% Postaxial foot polydactyly 33% Syndactyly 33% Autosomal dominant inheritance - Complete duplication of distal phalanx of the thumb - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Keratoderma palmoplantar deafness ? | What are the signs and symptoms of Keratoderma palmoplantar deafness? The Human Phenotype Ontology provides the following list of signs and symptoms for Keratoderma palmoplantar deafness. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Palmoplantar keratoderma 90% Sensorineural hearing impairment 90% Autosomal dominant inheritance - Hearing impairment - Palmoplantar hyperkeratosis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Vitreoretinochoroidopathy dominant ? | What are the signs and symptoms of Vitreoretinochoroidopathy dominant? The Human Phenotype Ontology provides the following list of signs and symptoms for Vitreoretinochoroidopathy dominant. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of retinal pigmentation 90% Optic atrophy 50% Abnormal electroretinogram 7.5% Aplasia/Hypoplasia of the lens 7.5% Dyschromatopsia 7.5% Microphthalmia 7.5% Abnormality of chorioretinal pigmentation - Abnormality of color vision - Autosomal dominant inheritance - Glaucoma - Microcornea - Nyctalopia - Nystagmus - Pigmentary retinopathy - Pulverulent Cataract - Retinal arteriolar constriction - Retinal arteriolar occlusion - Retinal detachment - Strabismus - Vitreous hemorrhage - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Klumpke paralysis ? | Klumpke paralysis is a type of brachial palsy in newborns. Signs and symptoms include weakness and loss of movement of the arm and hand. Some babies experience drooping of the eyelid on the opposite side of the face as well. This symptom may also be referred to as Horner syndrome. Klumpke paralysis is caused by an injury to the nerves of the brachial plexus which may result from a difficult delivery. This injury can cause a stretching (neuropraxia,), tearing (called avulsion when the tear is at the spine, and rupture when it is not), or scarring (neuroma) of the brachial plexus nerves. Most infants with Klumpke paralysis have the more mild form of injury (neuropraxia) and often recover within 6 months. |
treatment | What are the treatments for Klumpke paralysis ? | How might Klumpke paralysis be treated? The affected arm may be immobilized across the body for 7 to 10 days. For mild cases gentle massage of the arm and range-of-motion exercises may be recommended. For torn nerves (avulsion and rupture injuries), symptoms may improve with surgery. Most infants recover from neuropraxia within 4 months. Parents or guardians of infants that show no evidence of spontaneous recovery at 4 months, may be counseled regarding additional treatment options. These treatment options may include: Surgery on the nerves (e.g., nerve grafts and neuroma excision) Tendon transfers to help the muscles that are affected by nerve damage work better |
information | What is (are) Microscopic polyangiitis ? | Microscopic polyangiitis (MPA) is a disorder that causes blood vessel inflammation (vasculitis), which can lead to organ damage. The kidneys, lungs, nerves, skin, and joints are the most commonly affected areas of the body. MPA is diagnosed in people of all ages, all ethnicities, and both genders. The cause of this disorder is unknown. |
symptoms | What are the symptoms of Microscopic polyangiitis ? | What are the signs and symptoms of Microscopic polyangiitis? The symptoms of MPA depend on which blood vessels are involved and what organs in the body are affected. The most common symptoms of MPA include kidney inflammation, weight loss, skin lesions, nerve damage, and fevers. This disorder may occur alone or with other disorders, such as temporal arteritis. The Human Phenotype Ontology provides the following list of signs and symptoms for Microscopic polyangiitis. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of temperature regulation 90% Autoimmunity 90% Glomerulopathy 90% Hematuria 90% Hemoptysis 90% Polyneuropathy 90% Pulmonary embolism 90% Renal insufficiency 90% Skin rash 90% Vasculitis 90% Abdominal pain 50% Arthralgia 50% Diarrhea 50% Gastrointestinal hemorrhage 50% Gastrointestinal infarctions 50% Myalgia 50% Nausea and vomiting 50% Peritonitis 50% Skin ulcer 50% Subcutaneous hemorrhage 50% Thrombophlebitis 50% Abnormality of the pericardium 7.5% Abnormality of the retinal vasculature 7.5% Arrhythmia 7.5% Arthritis 7.5% Congestive heart failure 7.5% Cutis marmorata 7.5% Epistaxis 7.5% Gangrene 7.5% Inflammatory abnormality of the eye 7.5% Pancreatitis 7.5% Paresthesia 7.5% Sinusitis 7.5% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Microscopic polyangiitis ? | What causes microscopic polyangiitis (MPA)? The cause of MPA is unknown. It is not contagious, does not usually run in families, and is not a form of cancer. The immune system is thought to play a critical role in the development of MPA. It is thought that the immune system becomes overactive and causes blood vessel and tissue inflammation, which leads to organ damage. It is not known what causes the immune system to become overactive. |
treatment | What are the treatments for Microscopic polyangiitis ? | What is the treatment for microscopic polyangiitis (MPA)? MPA is treated with medications that suppress the immune system, which can lower an individual's resistance to infections. There are a variety of immune suppressing medications that are used in MPA; however, resources state that a steroid (usually prednisone) and a medication toxic to cells (usually starting with cyclophosphamide) are typically prescribed first. The goal of treatment is to stop all of the organ damage that occurs as a result of MPA. The duration of treatment with immune suppressing medication varies between individuals, but is typically given for at least one to two years. |
symptoms | What are the symptoms of Crisponi syndrome ? | What are the signs and symptoms of Crisponi syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Crisponi syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Anteverted nares 90% Camptodactyly of finger 90% Full cheeks 90% Hyperhidrosis 90% Hypertonia 90% Hypohidrosis 90% Kyphosis 90% Large face 90% Long philtrum 90% Malignant hyperthermia 90% Respiratory insufficiency 90% Scoliosis 90% Sudden cardiac death 90% Abnormality of the palate 50% Cognitive impairment 50% Limitation of joint mobility 50% Narrow mouth 7.5% Seizures 7.5% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Familial hypocalciuric hypercalcemia type 2 ? | What are the signs and symptoms of Familial hypocalciuric hypercalcemia type 2? The Human Phenotype Ontology provides the following list of signs and symptoms for Familial hypocalciuric hypercalcemia type 2. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Nephrolithiasis 5% Peptic ulcer 5% Chondrocalcinosis - Hypercalcemia - Hypermagnesemia - Hypocalciuria - Multiple lipomas - Pancreatitis - Parathormone-independent increased renal tubular calcium reabsorption - Primary hyperparathyroidism - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Tetralogy of Fallot ? | Tetralogy of Fallot is a complex congenital heart defect characterized by a large ventricular septal defect (hole between the right and left ventricles), pulmonary stenosis (narrowing of the valve and artery that connect the heart with the lungs), an overriding aorta (the aorta - the artery that carries oxygen-rich blood to the body - is shifted over the right ventricle and ventricular septal defect, instead of coming out only from the left ventricle), and right ventricular hypertrophy (the muscle of the right ventricle is thicker than usual). Tetralogy of Fallot causes low oxygen levels in the blood, which can lead to cyanosis (a bluish-purple color to the skin). The cause of this condition is unknown. Treatment involves surgery to repair the heart defects. Sometimes more than one surgery is needed. |
symptoms | What are the symptoms of Tetralogy of Fallot ? | What are the signs and symptoms of Tetralogy of Fallot? The Human Phenotype Ontology provides the following list of signs and symptoms for Tetralogy of Fallot. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal nasal morphology 90% Brachydactyly syndrome 90% Broad forehead 90% Clinodactyly of the 5th finger 90% Intrauterine growth retardation 90% Abnormality of periauricular region 50% Cryptorchidism 50% Dolichocephaly 50% Proptosis 50% Tetralogy of Fallot 50% Thin vermilion border 50% Underdeveloped supraorbital ridges 50% Autosomal dominant inheritance - Preauricular pit - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Erythema multiforme ? | Erythema multiforme (EM) refers to a group of hypersensitivity disorders characterized by symmetric red, patchy lesions, primarily on the arms and legs. The cause is unknown, but EM frequently occurs in association with herpes simplex virus, suggesting an immunologic process initiated by the virus. In half of the cases, the triggering agents appear to be medications, including anticonvulsants, sulfonamides, nonsteroidal anti-inflammatory drugs, and other antibiotics. In addition, some cases appear to be associated with infectious organisms such as Mycoplasma pneumoniae and many viral agents. Erythema multiforme is the mildest of three skin disorders that are often discussed in relation to each other. It is generally the mildest of the three. More severe is Stevens-Johnson syndrome. The most severe of the three is toxic epidermal necrolysis (TEN). |
symptoms | What are the symptoms of Autosomal recessive palmoplantar keratoderma and congenital alopecia ? | What are the signs and symptoms of Autosomal recessive palmoplantar keratoderma and congenital alopecia? The Human Phenotype Ontology provides the following list of signs and symptoms for Autosomal recessive palmoplantar keratoderma and congenital alopecia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the fingernails 90% Aplasia/Hypoplasia of the skin 90% Atypical scarring of skin 90% Cataract 90% Lack of skin elasticity 90% Limitation of joint mobility 90% Palmoplantar keratoderma 90% Visual impairment 90% Alopecia totalis - Amniotic constriction ring - Autosomal recessive inheritance - Camptodactyly of finger - Congenital cataract - Dry skin - Facial erythema - Hyperkeratosis - Nail dysplasia - Nail dystrophy - Palmoplantar hyperkeratosis - Sclerodactyly - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Idiopathic CD4 positive T-lymphocytopenia ? | What are the signs and symptoms of Idiopathic CD4 positive T-lymphocytopenia? The Human Phenotype Ontology provides the following list of signs and symptoms for Idiopathic CD4 positive T-lymphocytopenia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal dominant inheritance - Bronchiolitis obliterans organizing pneumonia - Immunodeficiency - Lymphopenia - Recurrent otitis media - Recurrent sinusitis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Xeroderma pigmentosum type 7 ? | What are the signs and symptoms of Xeroderma pigmentosum type 7? The Human Phenotype Ontology provides the following list of signs and symptoms for Xeroderma pigmentosum type 7. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Ataxia 5% Cataract 5% Growth delay 5% Microcephaly 5% Microphthalmia 5% Pes cavus 5% Spasticity 5% Tremor 5% Autosomal recessive inheritance - Cutaneous photosensitivity - Defective DNA repair after ultraviolet radiation damage - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
symptoms | What are the symptoms of Leiner disease ? | What are the signs and symptoms of Leiner disease? The Human Phenotype Ontology provides the following list of signs and symptoms for Leiner disease. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal recessive inheritance - Complement deficiency - Generalized seborrheic dermatitis - Intractable diarrhea - Recurrent infections - Recurrent meningitis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Gamma aminobutyric acid transaminase deficiency ? | GABA (gamma-aminobutyric acid) is an important molecule which slows down the activity of cells in the brain.[1] GABA is broken down in the body by a substance known as 4-aminobutyrate aminotransferase, also known as GABA-transaminase or GABA-T.[1] Mutations in the ABAT gene can cause less GABA-T to be made, a condition known as GABA-T deficiency.[1] The symptoms for an individual with GABA-T deficiency can include: psychomotor retardation (a slowing down of thought and activity), low muscle tone, hyperactive responses, lethargy, seizures, and EEG abnormalities.[1] GABA-T deficiency is very rare, with fewer than 5 cases reported in the literature.[2] It is thought to be inherited in an autosomal recessive manner.[3][4] |
information | What is (are) Weaver syndrome ? | Weaver syndrome is a rare condition that is characterized primarily by tall stature. Other signs and symptoms of the condition may include macrocephaly (unusually large head size); intellectual disability; distinctive facial features; camptodactyly (permanently bent digits) of the fingers and/or toes; poor coordination; soft and doughy skin; umbilical hernia; abnormal muscle tone; and a hoarse, low-pitched cry during infancy. Some studies also suggest that people affected by Weaver syndrome may have an increased risk of developing neuroblastoma. Weaver syndrome is usually caused by changes (mutations) in the EZH2 gene. Although the condition is considered autosomal dominant, most cases occur as de novo mutations in people with no family history of the condition. Treatment is based on the signs and symptoms present in each person. |
symptoms | What are the symptoms of Weaver syndrome ? | What are the signs and symptoms of Weaver syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Weaver syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the fingernails 90% Accelerated skeletal maturation 90% Broad forehead 90% Cognitive impairment 90% Cutis laxa 90% Hypertelorism 90% Hypoplastic toenails 90% Long philtrum 90% Low-set, posteriorly rotated ears 90% Macrocephaly 90% Macrotia 90% Tall stature 90% Abnormality of thumb phalanx 50% Broad foot 50% Camptodactyly of finger 50% Deep philtrum 50% Fine hair 50% Hernia of the abdominal wall 50% Large hands 50% Limitation of joint mobility 50% Round face 50% Cryptorchidism 7.5% Finger syndactyly 7.5% Hypoplasia of penis 7.5% Joint hypermobility 7.5% Pes cavus 7.5% Sandal gap 7.5% Scoliosis 7.5% Talipes 7.5% Abnormally low-pitched voice - Absent septum pellucidum - Autosomal dominant inheritance - Behavioral abnormality - Broad thumb - Calcaneovalgus deformity - Camptodactyly - Chin dimple - Clinodactyly - Coxa valga - Deep-set nails - Delayed speech and language development - Depressed nasal bridge - Diastasis recti - Dilation of lateral ventricles - Dysarthria - Dysharmonic bone age - Epicanthus - Flared femoral metaphysis - Flared humeral metaphysis - Hydrocele testis - Hypertonia - Hypoplastic iliac wing - Inguinal hernia - Intellectual disability - Inverted nipples - Joint contracture of the hand - Kyphosis - Limited elbow extension - Limited knee extension - Mandibular prognathia - Muscular hypotonia - Overlapping toe - Prominent fingertip pads - Radial deviation of finger - Retrognathia - Seizures - Short fourth metatarsal - Short ribs - Slurred speech - Sparse hair - Spasticity - Strabismus - Talipes equinovarus - Thin nail - Umbilical hernia - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Giant axonal neuropathy ? | Giant axonal neuropathy (GAN) is a neurodegenerative disorder characterized by abnormally large and dysfunctional axons (the specialized extensions of nerve cells that are required for the transmission of nerve impulses). The condition typically appears in infancy or early childhood with severe peripheral motor and sensory neuropathy (affecting movement and sensation in the arms and legs). Early signs include difficulty walking, lack of coordination, and loss of strength. Over time, the central nervous system (brain and spinal cord) becomes involved, causing a gradual decline in mental function, loss of control of body movements, and seizures. Giant axonal neuropathy is caused by mutations in the GAN gene. It follows and autosomal dominant pattern of inheritance. Management is directed by a multidisciplinary team with the goal of optimizing intellectual and physical development. |
symptoms | What are the symptoms of Giant axonal neuropathy ? | What are the signs and symptoms of Giant axonal neuropathy? The Human Phenotype Ontology provides the following list of signs and symptoms for Giant axonal neuropathy. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Intellectual disability 5% Abnormal pyramidal signs - Abnormality of the cerebellum - Abnormality of the hand - Areflexia of lower limbs - Autosomal recessive inheritance - Curly hair - Decreased number of peripheral myelinated nerve fibers - Distal amyotrophy - Distal muscle weakness - Distal sensory impairment - Dysarthria - Facial palsy - Hyperreflexia - Hyporeflexia of lower limbs - Juvenile onset - Morphological abnormality of the pyramidal tract - Motor axonal neuropathy - Nystagmus - Pes cavus - Pes planus - Phenotypic variability - Proximal muscle weakness - Scoliosis - Sensory axonal neuropathy - Slow progression - Spastic paraplegia - Steppage gait - Talipes equinovarus - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
information | What is (are) Chromosome 8p deletion ? | Chromosome 8p deletion is a chromosome abnormality that affects many different parts of the body. People with this condition are missing genetic material located on the short arm (p) of chromosome 8 in each cell. The severity of the condition and the associated signs and symptoms vary based on the size and location of the deletion and which genes are involved. Most cases are not inherited, although affected people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person. |
information | What is (are) Barrett esophagus ? | Barrett esophagus is a condition in which the lining of the esophagus (the tube that carries food from the throat to the stomach) is replaced by tissue that is similar to the lining of the intestines. Although this change does not cause any specific signs or symptoms, it is typically diagnosed in people who have long-term gastroesophageal reflux disease (GERD). The exact underlying cause of Barrett esophagus is not known; however, it generally occurs sporadically in people with no family history of the condition. Treatment varies by the severity of the condition and generally includes medications and life style modifications to ease the symptoms of GERD. Endoscopic or surgical treatments may be recommended in people with severe cases. |
symptoms | What are the symptoms of Barrett esophagus ? | What are the signs and symptoms of Barrett esophagus? In people affected by Barrett esophagus, the tissue lining the esophagus (the tube connecting the mouth to the stomach) is replaced by cells that are similar to those found in the lining of the intestines. This change does not cause any specific signs or symptoms. However, Barrett esophagus is typically diagnosed in people who have long-term gastroesophageal reflux disease (GERD). GERD may be associated with symptoms such as frequent heartburn, difficulty swallowing food, and/or chest pain (less commonly). People with Barrett esophagus do have a greater risk than the general population of developing esophageal cancer. However, the overall risk is still low as less than 0.5 percent of people with Barrett esophagus develop cancer of the esophagus each year. The Human Phenotype Ontology provides the following list of signs and symptoms for Barrett esophagus. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the abdominal organs 90% Neoplasm 50% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Barrett esophagus ? | What causes Barrett esophagus? The exact underlying cause of Barrett esophagus is unknown. However, certain factors are known to increase the risk of developing the condition. These include: Long-standing gastroesophageal reflux disease (GERD) Obesity (specifically high levels of belly fat) Smoking Factors that may decrease the risk include having a Helicobacter pylori (H. pylori) infection; frequent use of aspirin or other nonsteroidal anti-inflammatory drugs; and a diet high in fruits, vegetables, and certain vitamins. |
inheritance | Is Barrett esophagus inherited ? | Is Barrett esophagus inherited? Barrett esophagus usually occurs sporadically in people with no family history of the condition. In rare cases, it can affect more than one family member; however, it is unclear whether these cases are due to common environmental exposures or an inherited predisposition (or a combination of the two). One study found that some people with Barrett esophagus who go on to develop esophageal adenocarcinoma have changes (mutations) in the MSR1, ASCC1, and/or CTHRC1 genes. However, additional studies are needed to confirm these findings. |
exams and tests | How to diagnose Barrett esophagus ? | How is Barrett esophagus diagnosed? Esophagogastroduodenoscopy (EGD) with a biopsy is the procedure of choice for confirming a diagnosis of Barret esophagus. A diagnosis is often made while investigating other conditions such as gastroesophageal reflux disease (GERD). Based on the biopsy, a doctor will be able to determine the severity of the condition, which can help inform treatment decisions. The sample may be classified as: No dysplasia - a diagnosis of Barrett's esophagus is confirmed, but no precancerous changes are found in the cells Low-grade dysplasia - the cells show small signs of precancerous changes High-grade dysplasia - the cells show many precancerous changes. This is thought to be the final step before cells change into esophageal cancer The National Institute of Diabetes and Digestive and Kidney Diseases' (NIDDK) Web site offers more specific information on the diagnosis of Barret esophagus. Please click on the link to access this resource. |
treatment | What are the treatments for Barrett esophagus ? | How might Barrett esophagus be treated? The treatment of Barrett esophagus largely depends on the severity of the condition as determined by the level of dysplasia seen on biopsy. In people with no dysplasia or low-grade dysplasia, treatment is often focused on easing the signs and symptoms of gastroesophageal reflux disease (GERD), which can cause further damage to the esophagus. This may include certain medications and lifestyle modifications such as avoiding smoking; eliminating food and drinks that trigger heartburn; raising the head of the bed while sleeping; and/or avoiding late night snacking. Periodic endoscopy may also be recommended to monitor Barrett esophagus as other treatments may be indicated if the condition advances. Because high-grade dysplasia is thought to be the final step before cells change into esophageal cancer, more aggressive treatments are typically recommended. These may include:[ Endoscopic resection - an endoscope is used to remove damaged cells Endoscopic ablative therapies - different techniques such as photodynamic therapy or radiofrequency ablation are used to destroy the dysplasia in the esophagus. In photodynamic therapy, abnormal cells are destroyed by making them sensitive to light, while radiofrequency ablation uses heat to remove abnormal esophagus tissue. Surgery - the damaged part of the esophagus is removed and the remaining portion is attached to the stomach The National Institute of Diabetes and Digestive and Kidney Diseases' (NIDDK) Web site offers more specific information on the treatment and management of Barret esophagus. Please click on the link to access this resource. |
information | What is (are) Juvenile amyotrophic lateral sclerosis ? | Juvenile amyotrophic lateral sclerosis (ALS) is a type of motor neuron disease which leads to problems with muscle control and movement. Signs and symptoms of juvenile ALS tend to present by age 25 years or younger. Unlike other types of ALS, juvenile ALS is not rapidly progressive. People with juvenile ALS can have a normal life expectancy. Juvenile ALS is often genetic and may be inherited in an autosomal dominant or autosomal recessive fashion. |
symptoms | What are the symptoms of Juvenile amyotrophic lateral sclerosis ? | What are the signs and symptoms of juvenile amyotrophic lateral sclerosis? Signs and symptoms of juvenile ALS vary but include slowly to very slowly progressive muscle weakness, increased muscle tone, Babinski reflex, muscle spasm (clonus), exaggerated reflexes, muscle wasting, and muscle twitching. Juvenile ALS usually does not affect thinking or mental processing, nor does it tend to cause sensory dysfunction (e.g., numbness or tingling). As the condition progresses muscle involvement can be severe. Some people with juvenile ALS, eventually experience muscle weakness in the face and throat. Some have experienced emotional liability (involuntary crying or laughing) and/or respiratory weakness.[133] |
causes | What causes Juvenile amyotrophic lateral sclerosis ? | What causes juvenile amyotrophic lateral sclerosis? Juvenile amyotrophic lateral sclerosis (ALS) is often genetic and may be caused by mutations in the ALS2 or SETX genes. In some cases the underlying gene abnormality cannot be determined. Juvenile ALS may be inherited in an autosomal dominant (as in ALS type 4) or autosomal recessive (as in ALS type 2) fashion. |
treatment | What are the treatments for Juvenile amyotrophic lateral sclerosis ? | How might juvenile amyotrophic lateral sclerosis be treated? Treatments and therapies are available to relieve symptoms and improve the quality of life of people with juvenile ALS. Medications, such as those that reduce fatigue and ease muscle cramps are available. Physical therapy and special equipment can be helpful. Multidisciplinary teams of health care professionals such as physicians; pharmacists; physical, occupational, and speech therapists; nutritionists; and social workers can help to develop personalized treatment plans. While the Food and Drug Administration (FDA) has approved riluzole (Rilutek) for treatment of ALS, we found limited information regarding its use for juvenile ALS. We recommend that you discuss any questions regarding the risk/benefits of this drug with your healthcare provider. |
information | What is (are) Hemifacial microsomia ? | Hemifacial microsomia (HFM) is a condition in which part of one side of the face is underdeveloped and does not grow normally. The eye, cheekbone, lower jaw, facial nerves, muscles, and neck may be affected. Other findings may include hearing loss from underdevelopment of the middle ear; a small tongue; and macrostomia (large mouth). HFM is the second most common facial birth defect after clefts. The cause of HFM in most cases is unknown. It usually occurs in people with no family history of HFM, but it is inherited in some cases. Treatment depends on age and the specific features and symptoms in each person. |
symptoms | What are the symptoms of Hemifacial microsomia ? | What are the signs and symptoms of Hemifacial microsomia? People with hemifacial microsomia may have various signs and symptoms, including: Facial asymmetry Abnormalities of the outer ear such as absence, reduced size (hypoplasia), and/or displacement Small and/or flattened maxillary, temporal, and malar bones Deafness due to middle ear abnormalities Ear tags Abnormalities (in shape or number) of the teeth, or significant delay of tooth development Narrowed mandible (jaw) or absence of half of the mandible Cleft lip and/or palate Reduced size of facial muscles Abnormalities of the eyes (extremely small or absent) Skeletal abnormalities including problems of the spine or ribs Absence of cheeck muscles or nerves supplying those muscles (resulting in an uneven smile) The Human Phenotype Ontology provides the following list of signs and symptoms for Hemifacial microsomia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Facial asymmetry 90% Hearing impairment 90% Preauricular skin tag 90% Abnormal form of the vertebral bodies 50% Abnormality of the inner ear 50% Abnormality of the middle ear 50% Atresia of the external auditory canal 50% Cleft palate 50% Epibulbar dermoid 50% Low-set, posteriorly rotated ears 50% Neurological speech impairment 50% Non-midline cleft lip 50% Abnormal localization of kidney 7.5% Abnormality of the pharynx 7.5% Abnormality of the ribs 7.5% Aplasia/Hypoplasia affecting the eye 7.5% Aplasia/Hypoplasia of the corpus callosum 7.5% Aplasia/Hypoplasia of the lungs 7.5% Aplasia/Hypoplasia of the thumb 7.5% Autism 7.5% Cerebral cortical atrophy 7.5% Cleft eyelid 7.5% Cognitive impairment 7.5% Laryngomalacia 7.5% Muscular hypotonia 7.5% Renal hypoplasia/aplasia 7.5% Scoliosis 7.5% Short stature 7.5% Tetralogy of Fallot 7.5% Tracheoesophageal fistula 7.5% Tracheomalacia 7.5% Ventricular septal defect 7.5% Ventriculomegaly 7.5% Vertebral segmentation defect 7.5% Visual impairment 7.5% Wide mouth 7.5% Agenesis of corpus callosum - Anophthalmia - Anotia - Arnold-Chiari malformation - Autosomal dominant inheritance - Blepharophimosis - Block vertebrae - Branchial anomaly - Cleft upper lip - Coarctation of aorta - Conductive hearing impairment - Ectopic kidney - Hemivertebrae - Hydrocephalus - Hypoplasia of facial musculature - Hypoplasia of the maxilla - Intellectual disability - Malar flattening - Microphthalmia - Microtia - Multicystic kidney dysplasia - Occipital encephalocele - Patent ductus arteriosus - Pulmonary hypoplasia - Renal agenesis - Sensorineural hearing impairment - Strabismus - Unilateral external ear deformity - Upper eyelid coloboma - Ureteropelvic junction obstruction - Vertebral hypoplasia - Vesicoureteral reflux - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. |
causes | What causes Hemifacial microsomia ? | What causes hemifacial microsomia? For most people with hemifacial microsomia, the cause is unknown. It is believed that something occurs in the early stages of development, such as a disturbance of the blood supply to the first and second branchial arches in the first 6 to 8 weeks of pregnancy. Studies have suggested multiple possible risk factors for hemifacial microsomia. Environmental risk factors include the use of medications during pregnancy such as Accutane, pseudoephedrine, aspirin, or ibuprofen. Other environmental factors include second trimester bleeding, maternal diabetes, being pregnant with multiples, or the use of assisted reproductive technology. A genetic cause is found in some families, such as a chromosome disorder or a genetic syndrome. Some possible explanations when the cause of hemifacial microsomia is unknown include a very small chromosome deletion or duplication that is not detected, a mutation in an unknown gene, or changes in multiple genes associated with development of the face. It is also possible that a combination of genetic changes and environmental risk factors could cause hemifacial microsomia. |
inheritance | Is Hemifacial microsomia inherited ? | Is hemifacial microsomia inherited? Hemifacial microsomia most often occurs in a single individual in a family and is not inherited. If the condition is caused by a chromosomal abnormality, it may be inherited from one affected parent or it may result from a new abnormality in the chromosome and occur in people with no history of the disorder in their family. In a very small number of cases, hemifacial microsomia is inherited in an autosomal dominant pattern, which means one copy of an altered gene in each cell is sufficient to cause the disorder. In rare cases, the condition is inherited in an autosomal recessive pattern, which means both copies of a gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. The gene or genes involved in hemifacial microsomia are unknown. In some affected families, people seem to inherit an increased risk of developing hemifacial microsomia, not the condition itself. In these cases, some combination of genetic changes and environmental factors may be involved. |
treatment | What are the treatments for Hemifacial microsomia ? | How might hemifacial microsomia be treated? Treatment of hemifacial microsomia varies depending on the features present and the severity in each affected person. Various types of surgeries may be needed in many cases. Some children need breathing support or a tracheostomy soon after birth if the jaw is severely affected. However in most cases, airway problems can be managed without surgery. Those with a jaw deformity and/or clefts may have feeding problems and may need supplemental feedings through a nasogastric tube to support growth and weight gain. Babies born with cleft lip or palate can have surgical repairs done during the first year. Cleft lip repair is typically performed when the child is 3-6 months old, while cleft palate surgery is generally performed when the child is about a year old. A lateral facial cleft, one of the most severe abnormalities associated with the condition, also requires reconstruction in stages. If eye closure is incomplete due to eyelid abnormalities or facial paralysis is present, a child may need eye protection or surgery. Surgery may also be used for eyelid differences to reposition the lower lids and corners of the eyes. Some children with abnormally shaped or missing ears may choose to have a series of reconstructive surgeries to make the ear appear more normal. Children with skin, cheek and other soft tissue deficiencies may need augmentation procedures such as fat grafting or tissue transfer. Severe bone abnormalities may require surgery as well. Because multiple body systems may be involved in hemifacial microsomia, affected people should continually be monitored for complications. |
information | What is (are) Swyer-James syndrome ? | Swyer-James syndrome is a rare condition in which the lung (or portion of the lung) does not grow normally and is slightly smaller than the opposite lung, usually following bronchiolitis in childhood. It is typically diagnosed after a chest X-ray or CT scan which shows unilateral pulmonary hyperlucency (one lung appearing less dense) and diminished pulmonary arteries. Affected individuals may not have any symptoms, or more commonly, they may have recurrent pulmonary infections and common respiratory symptoms. The cause of the condition is not completely understood. |
symptoms | What are the symptoms of Swyer-James syndrome ? | What are the signs and symptoms of Swyer-James syndrome? Individuals with Swyer-James syndrome may not have any symptoms, but affected individuals can have chronic or recurring lung infections, shortness of breath (dyspnea) when performing an activity, coughing up of blood (hemoptysis), and even severe respiratory impairment. |
causes | What causes Swyer-James syndrome ? | What causes Swyer-James syndrome? The cause of Swyer-James syndrome is not completely understood. Most experts agree that the initial abnormality occurs in the distal bronchi (air tubes that bring air to and from the lungs) after an infection during early childhood. The smaller size of the affected lung may be due to the infection inhibiting the normal growth of the lung. A number of reports have described Swyer-James syndrome following childhood histories including radiation therapy; measles; pertussis (whooping cough); tuberculosis; breathing in a foreign body; mycoplasma; and viral infections, especially adenovirus. Research has suggested that a hyper-immune reaction in the lung (producing an unusual abundance of antibodies) may play a role in sustaining airway damage after the initial infection. Some have argued a pre-existing lung abnormality may predispose individuals to the condition. Although bronchial damage of some kind during childhood is generally considered to play an important role, many affected individuals have had no known history of an airway infection. It is possible that some unknown factors present at birth may contribute to the development of Swyer-James syndrome. |
treatment | What are the treatments for Swyer-James syndrome ? | How might Swyer-James syndrome be treated? Individuals with Swyer-James syndrome reportedly have been treated conservatively in the past. However, although there are few reports published, it has been recognized that surgical treatment should be considered when infections cannot be controlled. There have been reports of affected individuals being treated with pneumonectomy (removal of a lung), lobectomy (removal of one or more lobes of a lung) or segmentectomy (removal of a specific segment). It has been proposed that individuals with Swyer-James syndrome may benefit from lung volume reduction surgery (LVRS), a procedure in which damaged tissue is removed from the lung. LVRS was reportedly performed successfully in an individual with Swyer-James syndrome, and it has been suggested that the procedure could be used for managing the condition in other affected individuals because it has shown to be effective for improving pulmonary function and symptoms. |