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Combined malonic and methylmalonic aciduria (CMAMMA) is an inherited condition in which certain chemicals accumulate in the blood and urine of affected individuals. People with CMAMMA can have a wide variety of symptoms. Children with CMAMMA can suffer from developmental delays and a failure to gain weight and grow (fa...
MFDM is a rare disorder; its exact prevalence is unknown. More than 60 affected individuals have been described in the medical literature.
The inheritance pattern of Tourette syndrome is unclear. Although the features of this condition can cluster in families, many genetic and environmental factors are likely to be involved. Among family members of an affected person, it is difficult to predict who else may be at risk of developing the condition. Tourett...
The prevalence of deafness and myopia syndrome is unknown. Only a few affected families have been described in the medical literature.
D-2-alpha hydroxyglutaric aciduria is an inherited metabolic condition that is associated with progressive brain damage. Signs and symptoms of this condition include developmental delay, seizures, hypotonia, and abnormalities in the largest part of the brain (the cerebrum), which controls many important functions such ...
These resources address the diagnosis or management of Hutchinson-Gilford progeria syndrome: - Gene Review: Gene Review: Hutchinson-Gilford Progeria Syndrome - Genetic Testing Registry: Hutchinson-Gilford syndrome - MedlinePlus Encyclopedia: Progeria These resources from MedlinePlus offer information about the dia...
Being female can increase the risk of developing gallbladder cancer. Anything that increases your chance of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesn't mean that you will not get cancer. Talk with your doctor if you think you ma...
Mannose-binding lectin deficiency is thought to affect approximately 5 to 10 percent of people worldwide; however, many affected individuals have no signs or symptoms related to low mannose-binding lectin levels. The condition is more common in certain populations, such as sub-Saharan Africans.
Mitral valve prolapse (MVP) affects people of all ages and both sexes; however, aging raises the risk of developing the disease. Certain conditions have been associated with MVP, including: A history of rheumatic fever Connective tissue disorders, such as Marfan syndro...
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.
What causes Lambert Eaton myasthenic syndrome? Lambert Eaton myasthenic syndrome is the result of an autoimmune process which causes a disruption of electrical impulses between nerve cells and muscle fibers. In cases where Lambert Eaton myasthenic syndrome appears in association with cancer, the cause may be that the b...
Ochoa syndrome can be caused by mutations in the HPSE2 gene. This gene provides instructions for making a protein called heparanase 2. The function of this protein is not well understood. Mutations in the HPSE2 gene that cause Ochoa syndrome result in changes in the heparanase 2 protein that likely prevent it from fun...
Between 1 in 215,000 and 1 in 400,000 babies are born with diabetes mellitus. In about half of these babies, the diabetes is transient. Researchers estimate that approximately 70 percent of transient diabetes in newborns is caused by 6q24-related transient neonatal diabetes mellitus.
These resources address the diagnosis or management of myosin storage myopathy: - Genetic Testing Registry: Myosin storage myopathy These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - ...
Polycystic liver disease is an inherited condition characterized by many cysts of various sizes scattered throughout the liver. Abdominal discomfort from swelling of the liver may occur; however, most affected individuals do not have any symptoms. In some cases, polycystic liver disease appears to occur randomly, with ...
Mutations in the AAAS gene cause triple A syndrome. This gene provides instructions for making a protein called ALADIN whose function is not well understood. Within cells, ALADIN is found in the nuclear envelope, the structure that surrounds the nucleus and separates it from the rest of the cell. Based on its location,...
Summary : Menopause is the time in a woman's life when her period stops. It is a normal part of aging. In the years before and during menopause, the levels of female hormones can go up and down. This can cause symptoms such as hot flashes and vaginal dryness. Some women take hormone replacement therapy (HRT), also call...
Mutations in the ACVR1 gene cause fibrodysplasia ossificans progressiva. The ACVR1 gene provides instructions for producing a member of a protein family called bone morphogenetic protein (BMP) type I receptors. The ACVR1 protein is found in many tissues of the body including skeletal muscle and cartilage. It helps to ...
Carnitine-acylcarnitine translocase deficiency is a condition that prevents the body from converting certain fats called long-chain fatty acids into energy, particularly during periods without food (fasting). Carnitine, a natural substance acquired mostly through the diet, is used by cells to process fats and produce e...
Mutations in the ACADS gene cause SCAD deficiency. This gene provides instructions for making an enzyme called short-chain acyl-CoA dehydrogenase, which is required to break down (metabolize) a group of fats called short-chain fatty acids. Fatty acids are a major source of energy for the heart and muscles. During perio...
Familial dermographism is a condition also known as skin writing. When people who have dermatographia lightly scratch their skin, the scratches redden into a raised wheal similar to hives. Signs and symptoms of dermatographia include raised red lines, swelling, inflammation, hive-like welts and itching. Symptoms usuall...
Researchers have not found a way to prevent kidney dysplasia caused by genetic factors or certain genetic syndromes. Pregnant women can prevent kidney dysplasia by avoiding the use of certain prescription medications or illegal drugs during pregnancy. Pregnant women should talk with their health care provider before ta...
Familial hemiplegic migraine (FHM) is a form of migraine headache that runs in families. Migraines usually cause intense, throbbing pain in one area of the head, often accompanied by nausea, vomiting, and extreme sensitivity to light and sound. These recurrent headaches typically begin in childhood or adolescence and m...
Alpha-thalassemia x-linked intellectual disability (ATRX) syndrome is a genetic condition that causes intellectual disability, muscle weakness (hypotonia), short height, a particular facial appearance, genital abnormalities, and possibly other symptoms. It is caused by mutations in the ATRX gene and is inherited in an...
You're working at your desk, trying to ignore the tingling or numbness you've had for some time in your hand and wrist. Suddenly, a sharp, piercing pain shoots through the wrist and up your arm. Just a passing cramp? It could be carpal tunnel syndrome. The carpal tunnel is a narrow passageway of ligament and bones a...
Summary : Alcohol is the most widely abused substance among America's youth. Drinking by young people has big health and safety risks. It is dangerous because it - Causes many deaths and injuries - Can lead to poor decisions about engaging in risky behavior, such as drinking and driving or unprotected sex -...
Cyclic neutropenia is a rare condition and is estimated to occur in 1 in 1 million individuals worldwide.
The long-term outlook for a child with kidney dysplasia in both kidneys is different from the long-term outlook for a child with one dysplastic kidney. A child with kidney dysplasia in both kidneys - is more likely to develop CKD. - needs close follow-up with a pediatric nephrologista doctor who speci...
Adult polyglucosan body disease is a rare condition; although its exact prevalence is unknown, at least 50 affected individuals have been described in the medical literature.
People who have any signs or symptoms of severe dehydration should call or see a health care provider right away: - excessive thirst - dark-colored urine - infrequent urination - lethargy, dizziness, or faintness - dry skin Infants and children are most likely to become dehydrated....
Kidney stones are caused by high levels of calcium, oxalate, and phosphorus in the urine. Some foods may cause kidney stones in certain people. You may be more likely to get a kidney stone if you have - a condition that affects levels of substances in your urine that can cause stones to form - a famil...
Mutations in the PCCA and PCCB genes cause propionic acidemia. The PCCA and PCCB genes provide instructions for making two parts (subunits) of an enzyme called propionyl-CoA carboxylase. This enzyme plays a role in the normal breakdown of proteins. Specifically, it helps process several amino acids, which are the buil...
22q11.2 duplication syndrome is a condition caused by an extra copy of a small piece of chromosome 22 which contains about 30 to 40 genes. The features of this condition vary widely, even among members of the same family (intrafamilial variability). Affected individuals may have intellectual or learning disability, dev...
What causes Tay-Sachs disease? Tay-Sachs disease is caused by mutations in the HEXA gene. The HEXA gene provides instructions for making part of an enzyme called beta-hexosaminidase A, which plays a critical role in the brain and spinal cord. This enzyme is located in lysosomes, which are structures in cells that break...
Neuroferritinopathy is a movement disorder caused by the gradual accumulation of iron in the basal ganglia of the brain. People with neuroferritinopathy have progressive problems with movement that begin at about age 40. These movement problems can include involuntary jerking motions (chorea), rhythmic shaking (tremor)...
8p11 myeloproliferative syndrome is caused by rearrangements of genetic material (translocations) between two chromosomes. All of the translocations that cause this condition involve the FGFR1 gene, which is found on the short (p) arm of chromosome 8 at a position described as p11. The translocations lead to fusion of ...
Hystrix-like ichthyosis with deafness (HID) is a disorder characterized by dry, scaly skin (ichthyosis) and hearing loss that is usually profound. Hystrix-like means resembling a porcupine; in this type of ichthyosis, the scales may be thick and spiky, giving the appearance of porcupine quills. Newborns with HID typic...
Coats plus syndrome results from mutations in the CTC1 gene. This gene provides instructions for making a protein that plays an important role in structures known as telomeres, which are found at the ends of chromosomes. Telomeres are short, repetitive segments of DNA that help protect chromosomes from abnormally stick...
What causes 3-hydroxyisobutyric aciduria? In many affected people, the exact underlying cause of 3-hydroxyisobutyric aciduria is poorly understood. Scientists believe that some cases are caused by changes (mutations) in the ALDH6A1 gene. This gene encodes an enzyme called methylmalonate semialdehyde dehydrogenase, whic...
Research found that that prompt treatment of macular edema with anti-VEGF drugs, with or without laser treatment, resulted in better vision than laser treatment alone or steroid injections. When injected into the eye, these drugs reduce fluid leakage and interfere with the growth of new blood vessels in the retina. In ...
Glutamate formiminotransferase deficiency is an inherited metabolic disorder that affects physical and mental development. There are two forms of this condition, a mild form and a sever form. People with the mild form have minor delays in physical and mental development and may have mild intellectual disability. They a...
How is reticulohistiocytoma diagnosed? The diagnosis of reticulohistiocytoma (RH) is made based on clinical presentation, histology, and immunohistochemistry profile. RH occur in isolation and are typically described as small, yellow to reddish-born nodules. The lesions usually are slightly elevated from the surroundin...
These resources address the diagnosis or management of Wiskott-Aldrich syndrome: - Gene Review: Gene Review: WAS-Related Disorders - Genetic Testing Registry: Wiskott-Aldrich syndrome - MedlinePlus Encyclopedia: Thrombocytopenia - National Marrow Donor Program - Rare Disease Clinical Research Network: Primary Immu...
VLDLR-associated cerebellar hypoplasia is rare; its prevalence is unknown. The condition was first described in the Hutterite population in Canada and the United States. This condition has also been reported in families from Iran and Turkey.
Mutations in the LMNA gene cause Hutchinson-Gilford progeria syndrome. The LMNA gene provides instructions for making a protein called lamin A. This protein plays an important role in determining the shape of the nucleus within cells. It is an essential scaffolding (supporting) component of the nuclear envelope, which...
- Erectile dysfunction (ED) is when you cannot get or keep an erection firm enough to have sex. You may have ED if you - can get an erection sometimes, though not every time - can get an erection, yet it does not last long enough for sex - are unable to get an erection at all - An erection occurs when blo...
Juvenile myoclonic epilepsy is an epilepsy syndrome characterized by myoclonic jerks (quick jerks of the arms or legs), generalized tonic-clonic seizures (GTCSs), and sometimes, absence seizures. The seizures of juvenile myoclonic epilepsy often occur when people first awaken in the morning. Seizures can be triggered b...
These resources address the diagnosis or management of congenital hyperinsulinism: - Gene Review: Gene Review: Familial Hyperinsulinism - Genetic Testing Registry: Exercise-induced hyperinsulinemic hypoglycemia - Genetic Testing Registry: Familial hyperinsulinism - Genetic Testing Registry: Hyperinsulinemic hypogly...
Atherosclerosis is a disease in which plaque builds up inside your arteries. Plaque is a sticky substance made up of fat, cholesterol, calcium, and other substances found in the blood. Over time, plaque hardens and narrows your arteries. That limits the flow of oxygen-rich blood to your body. Atherosclerosis can lea...
These resources address the diagnosis or management of ALG6-CDG: - Gene Review: Gene Review: Congenital Disorders of N-Linked Glycosylation Pathway Overview These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surge...
Warfarin sensitivity is a condition in which individuals have a low tolerance for the drug warfarin. Warfarin is an anticoagulant, which means that it thins the blood, preventing blood clots from forming. Warfarin is often prescribed to prevent blood clots in people with heart valve disease who have replacement heart v...
This condition is inherited in an autosomal recessive pattern, which means both copies of the 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.
Essential pentosuria is caused by mutations in the DCXR gene. This gene provides instructions for making a protein called dicarbonyl/L-xylulose reductase (DCXR), which plays multiple roles in the body. One of its functions is to perform a chemical reaction that converts a sugar called L-xylulose to a molecule called xy...
Treatment for dumping syndrome includes changes in eating, diet, and nutrition; medication; and, in some cases, surgery. Many people with dumping syndrome have mild symptoms that improve over time with simple dietary changes.
What are the signs and symptoms of schwannomas? Common signs and symptoms of schwannomas include a slow-growing mass and Tinel shock (electric-like shock when affected area is touched). Some people may experience numbness or other neurological symptoms depending on the size and location of the tumor.
How is limb-girdle muscular dystrophy inherited? Limb-girdle muscular dystrophy (LGMD) is most often inherited in an autosomal recessive manner; less commonly, rare sub-types may be inherited in an autosomal dominant manner. There may be difficulties diagnosing the condition accurately, and often the mode of inheritan...
Most cases of 1p36 deletion syndrome are not inherited. They result from a chromosomal deletion that occurs as a random event during the formation of reproductive cells (eggs or sperm) or in early fetal development. Affected people typically have no history of the disorder in their family. About 20 percent of people w...
How might mitochondrial genetic disorders be treated? Treatment for mitochondrial genetic disorders varies significantly based on the specific type of condition and the signs and symptoms present in each person. The primary aim of treatment is to alleviate symptoms and slow the progression of the condition. For example...
Ichthyosis with confetti is a rare disorder. Fewer than 20 affected individuals have been described in the medical literature.
What are the signs and symptoms of Deafness and myopia syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Deafness and myopia 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 Medline...
Treatment for COPD can be different for each person and is based on whether symptoms are mild, moderate or severe. Treatments include medication, pulmonary or lung rehabilitation, oxygen treatment, and surgery. There are also treatments to manage complications or a sudden onset of symptoms.
These resources address the diagnosis or management of Ellis-van Creveld syndrome: - Genetic Testing Registry: Chondroectodermal dysplasia - MedlinePlus Encyclopedia: Congenital Heart Disease - MedlinePlus Encyclopedia: Ellis-van Creveld Syndrome - MedlinePlus Encyclopedia: Polydactyly These resources from Medlin...
Infants who are born earlyusually more than 10 weeks before their due datesand still need oxygen therapy by the time they reach their original due dates are diagnosed with bronchopulmonary dysplasia (BPD). BPD can be mild, moderate, or severe. The diagnosis depends on how much extra oxygen a baby needs...
What causes Tourette syndrome? Although the cause of Tourette syndrome is unknown, current research points to abnormalities in certain brain regions (including the basal ganglia, frontal lobes, and cortex), the circuits that interconnect these regions, and the neurotransmitters (dopamine, serotonin, and norepinephrine)...
Summary : Pets can add fun, companionship and a feeling of safety to your life. Before getting a pet, think carefully about which animal is best for your family. What is each family member looking for in a pet? Who will take care of it? Does anyone have pet allergies? What type of animal suits your lifestyle and budget...
Hypertryptophanemia is a rare condition that likely occurs due to abnormalities in the body's ability to process the amino acid (a building block of proteins), tryptophan. People affected by this condition may experience intellectual disability and behavioral problems (i.e. periodic mood swings, exaggerated emotional r...
Glioblastoma is a malignant (cancerous) brain tumor that develops from a specific type of brain cell called an astrocyte. These cells help support and nourish neurons (nerve cells of the brain) and form scar tissue that helps repair brain damage in response to injury. Glioblastomas are often very aggressive and grow in...
Aromatic l-amino acid decarboxylase (AADC) deficiency is an inherited disorder that affects the way signals are passed between certain cells in the nervous system. Signs and symptoms of AADC deficiency generally appear in the first year of life. Affected infants may have severe developmental delay, weak muscle tone (h...
What are the signs and symptoms of Congenital dyserythropoietic anemia type 3? The Human Phenotype Ontology provides the following list of signs and symptoms for Congenital dyserythropoietic anemia type 3. If the information is available, the table below includes how often the symptom is seen in people with this condit...
Is afibrinogenemia an inherited condition? Afibrinogenemia is inherited in an autosomal recessive manner, meaning that in order to be affected, an individual must have inherited two abnormal genes, one from each parent. The offspring of an individual with afibrinogenemia are obligate heterozygotes (carriers) for a dise...
Certain factors affect prognosis (chance of recovery) and treatment options. The prognosis (chance of recovery) and treatment options depend on the following: - The number and size of lymph nodes that have cancer in them. - Whether the cancer has responded to treatment or has recurred (come back). - How d...
The NINDS conducts and supports research on TSEs. This research is aimed at determining how abnormal prion proteins lead to disease, at finding better tests for diagnosing CJD and other disorders, and ultimately at finding ways to treat TSEs.
Emanuel syndrome is a rare disorder; its prevalence is unknown. More than 100 individuals with this condition have been reported.
Corticobasal degeneration usually progresses slowly over the course of 6 to 8 years. Death is generally caused by pneumonia or other complications of severe debility such as sepsis or pulmonary embolism.
Treatment of atypical chronic myelogenous leukemia (CML) may include chemotherapy. Check the list of NCI-supported cancer clinical trials that are now accepting patients with atypical chronic myeloid leukemia, BCR-ABL1 negative. For more specific results, refine the search by using other search features, such as the ...
MEGDEL syndrome is caused by mutations in the SERAC1 gene. The function of the protein produced from this gene is not completely understood, although research suggests that it is involved in altering (remodeling) certain fats called phospholipids, particularly a phospholipid known as phosphatidylglycerol. Another phosp...
The National Institute of Neurological Disorders and Stroke (NINDS) conducts research related to Rasmussens encephalitis in its laboratories at the National Institutes of Health (NIH), and also supports additional research through grants to major research institutions across the country. Much of this research focuses o...
Familial hyperinsulinism is an inherited condition that causes individuals to have abnormally high levels of insulin, which leads to frequent episodes of low blood sugar (hypoglycemia). In infants and young children, these episodes are characterized by a lack of energy (lethargy), irritability, and/or difficulty feedin...
The incidence of ARSACS in the Charlevoix-Saguenay region of Quebec is estimated to be 1 in 1,500 to 2,000 individuals. Outside of Quebec, ARSACS is rare, but the incidence is unknown.
Many different problems can cause urgency, frequency, and bladder pain. Just a few of them are - infections - bowel disorders - endometriosistissue that normally lines the womb that appears in other places outside of the womb - bladder cancer Your doctor will ask you questions and r...
NASH is usually first suspected in a person who is found to have elevations in liver tests that are included in routine blood test panels, such as alanine aminotransferase (ALT) or aspartate aminotransferase (AST). When further evaluation shows no apparent reason for liver disease (such as medications, viral hepatitis,...
Menkes syndrome is inherited in an X-linked recessive pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition. In females (who have ...
As its name suggests, this condition is inherited in an autosomal recessive pattern. Autosomal recessive inheritance means both copies of the 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...
Multiple mitochondrial dysfunctions syndrome is characterized by impairment of cellular structures called mitochondria, which are the energy-producing centers of cells. While certain mitochondrial disorders are caused by impairment of a single stage of energy production, individuals with multiple mitochondrial dysfunct...
This condition is inherited in an autosomal recessive pattern, which means both copies of the 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.
Impetigo is a skin infection caused by bacteria. It is usually caused by staphylococcal (staph) bacteria, but it can also be caused by streptococcal (strep) bacteria. It is most common in children between the ages of two and six. It usually starts when bacteria get into a break in the skin, such as a cut, scratch, or i...
Hyperparathyroidism is an endocrine disorder in which the parathyroid glands in the neck produce too much parathyroid hormone (PTH). Signs and symptoms are often mild and nonspecific, such as a feeling of weakness and fatigue, depression, or aches and pains. With more severe disease, a person may have a loss of appetit...
How is Tietze syndrome diagnosed? Tietze syndrome is a diagnosis of exclusion. This means that a diagnosis is made in people with chest pain and swelling of the cartilage that joins the upper ribs to the breastbone (costochondral junction) after other conditions with similar signs and symptoms have been ruled out. A th...
POMC deficiency is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with this condition each carry one copy of the mutated gene. They typically do not have POMC deficiency, but they may have an increased risk of obesity.
This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the condition.
What are the signs and symptoms of Normophosphatemic familial tumoral calcinosis? The Human Phenotype Ontology provides the following list of signs and symptoms for Normophosphatemic familial tumoral calcinosis. If the information is available, the table below includes how often the symptom is seen in people with this ...
Is Townes-Brocks syndrome genetic? Yes. Townes-Brocks syndrome is inherited in an autosomal dominant fashion, which means that one copy of the altered gene in each cell is sufficient to cause the disorder. In about 50% of cases, an affected person inherits the mutation from an affected parent. The other 50% have the co...
DDON syndrome is inherited in an X-linked recessive pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition. In females (who have tw...
The National Institute of Neurological Disorders and Stroke (NINDS), a component of the National Institutes of Health (NIH) within the U.S. Department of Health and Human Services, is the nations primary funding source for research on the brain and nervous system. The NINDS conducts research on stroke and vascular lesi...
Familial erythrocytosis can have different inheritance patterns depending on the gene involved. When the condition is caused by mutations in the EPOR, EGLN1, or EPAS1 gene, it has an autosomal dominant pattern of inheritance. Autosomal dominant inheritance means one copy of the altered gene in each cell is sufficient ...
These resources address the diagnosis or management of familial hyperaldosteronism: - Genetic Testing Registry: Familial hyperaldosteronism type 1 - Genetic Testing Registry: Familial hyperaldosteronism type 3 - Hormone Health Network: A Patient's Guide: Primary Hyperaldosteronism - International Registry for Gluco...
Is genetic testing available for mulibrey nanism? Testing for the TRIM37 gene is available for carrier testing, confirming the diagnosis, and prenatal diagnosis. GeneTests lists the names of laboratories that are performing genetic testing for mulibrey nanism. To view the contact information for the clinical laboratori...
In most cases, myasthenia gravis is not inherited and occurs in people with no history of the disorder in their family. About 3 to 5 percent of affected individuals have other family members with myasthenia gravis or other autoimmune disorders, but the inheritance pattern is unknown.
These resources address the diagnosis or management of cardiofaciocutaneous syndrome: - Gene Review: Gene Review: Cardiofaciocutaneous Syndrome - Genetic Testing Registry: Cardiofaciocutaneous syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditions...
As yet, no specific treatment is known that can halt or reverse the symptoms of Batten disease. However, seizures can sometimes be reduced or controlled with anticonvulsant drugs, and other medical problems can be treated appropriately as they arise. Physical therapy and occupational therapy may help patients retain fu...