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Most cases of polycystic kidney disease have an autosomal dominant pattern of inheritance. People with this condition are born with one mutated copy of the PKD1 or PKD2 gene in each cell. In about 90 percent of these cases, an affected person inherits the mutation from one affected parent. The other 10 percent of cases...
Campomelic dysplasia is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Most cases result from new mutations in or near the SOX9 gene and occur in people with no history of the disorder in their family. Rarely, affected individuals i...
Summary : Assisted reproductive technology (ART) is used to treat infertility. It includes fertility treatments that handle both a woman's egg and a man's sperm. It works by removing eggs from a woman's body. The eggs are then mixed with sperm to make embryos. The embryos are then put back in the woman's body. In vitro...
What causes necrotizing fasciitis? Bacteria that can cause necrotizing fasciitis (NF) include the following: Klebsiella, Clostridium, and Escherichia coli; group A Streptococcus is the most common cause. Anyone can develop NF. Approximately 50% of necrotizing fasciitis cases caused by streptococcal bacteria occur in yo...
Pyoderma gangrenosum is a rare, destructive inflammatory skin disease of which a painful nodule or pustule breaks down to form a progressively enlarging ulcer. Lesions may occur either in the absence of any apparent underlying disorder or in association with other diseases, such as ulcerative colitis, Crohn's disease, ...
Congenital adrenal hyperplasia (CAH) due to 11-beta-hydroxylase deficiency is one of a group of disorders (collectively called congenital adrenal hyperplasia) that affect the adrenal glands. In this condition, the adrenal glands produce excess androgens (male sex hormones). This condition is caused by mutations in the ...
A sprain is a stretched or torn ligament. Ligaments are tissues that connect bones at a joint. Falling, twisting, or getting hit can all cause a sprain. Ankle and wrist sprains are common. Symptoms include pain, swelling, bruising, and being unable to move your joint. You might feel a pop or tear when the injury happen...
Nakajo-Nishimura syndrome appears to be rare and has been described only in the Japanese population. About 30 cases have been reported in the medical literature.
The biochemical defects that underlie several NCLs have recently been discovered. An enzyme called palmitoyl-protein thioesterase has been shown to be insufficiently active in the infantile form of Batten disease (this condition is now referred to as CLN1). In the late infantile form (CLN2), a deficiency of an acid pro...
In most cases of septo-optic dysplasia, the cause of the disorder is unknown. Researchers suspect that a combination of genetic and environmental factors may play a role in causing this disorder. Proposed environmental risk factors include viral infections, specific medications, and a disruption in blood flow to certai...
Polymyositis is one of a group of muscle diseases known as the inflammatory myopathies, which are characterized by chronic muscle inflammation accompanied by muscle weakness. Polymyositis affects skeletal muscles (those involved with making movement) on both sides of the body. It is rarely seen in persons under age 18;...
Is VLCAD deficiency inherited? VLCAD deficiency is inherited in an autosomal recessive manner. This means that to be affected, a person must have a mutation in both copies of the responsible gene in each cell. The parents of an affected person usually each carry one mutated copy of the gene and are referred to as carri...
The overall prognosis for individuals with AIDS in recent years has improved significantly because of new drugs and treatments. AIDS clinicians often fail to recognize neurological complications of AIDS. Those who suspect they are having neurological complications should be sure to discuss these with their doctor.
What are the signs and symptoms of Usher syndrome, type 1E? The Human Phenotype Ontology provides the following list of signs and symptoms for Usher syndrome, type 1E. 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 Medic...
The prevalence of PRICKLE1-related progressive myoclonus epilepsy with ataxia is unknown. The condition has been reported in three large families from Jordan and northern Israel and in at least two unrelated individuals.
Researchers are still learning about broken heart syndrome, and no treatments have been shown to prevent it. For people who have experienced the condition, the risk of recurrence is low. An emotionally upsetting or serious physical event can trigger broken heart syndrome. Learning how to manage stress,...
More than 150 individuals with gyrate atrophy have been identified; approximately one third are from Finland.
These resources address the diagnosis or management of D-bifunctional protein deficiency: - Gene Review: Gene Review: Leukodystrophy Overview - Genetic Testing Registry: Bifunctional peroxisomal enzyme deficiency These resources from MedlinePlus offer information about the diagnosis and management of various health...
The diagnosis of toxoplasmosis is typically made by serologic testing. A test that measures immunoglobulin G (IgG) is used to determine if a person has been infected. If it is necessary to try to estimate the time of infection, which is of particular importance for pregnant women, a test which measures immunoglobulin M...
3-methylcrotonyl-CoA carboxylase deficiency (also known as 3-MCC deficiency) is an inherited disorder in which the body is unable to process certain proteins properly. People with this disorder have a shortage of an enzyme that helps break down proteins containing a particular building block (amino acid) called leucine...
Leukodystrophy refers to progressive degeneration of the white matter of the brain due to imperfect growth or development of the myelin sheath, the fatty covering that acts as an insulator around nerve fiber. Myelin, which lends its color to the white matter of the brain, is a complex substance made up of at least ten ...
Mutations in the FGFR3 gene cause Muenke syndrome. The FGFR3 gene provides instructions for making a protein that is involved in the development and maintenance of bone and brain tissue. A single mutation in the FGFR3 gene is responsible for Muenke syndrome. This mutation causes the FGFR3 protein to be overly active, ...
These resources address the diagnosis or management of 1p36 deletion syndrome: - Gene Review: Gene Review: 1p36 Deletion Syndrome - Genetic Testing Registry: Chromosome 1p36 deletion syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagn...
What causes multiple pterygium syndrome, Escobar type? Some cases of multiple pterygium syndrome, Escobar type are caused by mutations in the CHRNG gene. There are likely other causes of this syndrome as well which have not yet been identified. As a result, in some cases the cause for the syndrome can not be determined...
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 many cases, an affected person has one parent with the condition.
These resources address the diagnosis or management of galactosialidosis: - Genetic Testing Registry: Combined deficiency of sialidase AND beta galactosidase - MedlinePlus Encyclopedia: Hepatosplenomegaly (image) - MedlinePlus Encyclopedia: Hydrops fetalis These resources from MedlinePlus offer information about t...
The prevalence of multiple pterygium syndrome is unknown.
How is diabetic mastopathy treated? Diabetic mastopathy is a benign condition and should be managed as such. Patients should be advised about the condition and how to self examine the breasts. They should be advised that iif there are any changes in size and number of breast lumps that they should consult their breast ...
Rebleeding from a cavernous angioma is common, it is not predictable, and individuals frequently have multiple CCMs found via magnetic resonance imaging. Individuals with CCM are faced with a diagnosis that imparts risk of multiple future hemorrhages that occur seemingly at random and without any preventative therapy e...
Fish-eye disease, also called partial LCAT deficiency, is a disorder that causes the clear front surface of the eyes (the corneas) to gradually become cloudy. The cloudiness, which generally first appears in adolescence or early adulthood, consists of small grayish dots of cholesterol (opacities) distributed across the...
The optic nerve is a bundle of more than 1 million nerve fibers. It connects the retina to the brain.
Your soft tissues connect, support, or surround other tissues. Examples include your muscles, tendons, fat, and blood vessels. Soft tissue sarcoma is a cancer of these soft tissues. There are many kinds, based on the type of tissue they started in. They may cause a lump or swelling in the soft tissue. Sometimes they sp...
Coloboma occurs in approximately 1 in 10,000 people. Because coloboma does not always affect vision or the outward appearance of the eye, some people with this condition are likely undiagnosed.
The main therapy for Parkinson's disease is the drug levodopa, also called L-dopa. It is a simple chemical found naturally in plants and animals. Nerve cells use levodopa to make dopamine to replenish the brain's supply. Levodopa helps to reduce tremors and other symptoms of Parkinson's disease during the early stages ...
The worldwide prevalence of Darier disease is unknown. The prevalence of Darier disease is estimated to be 1 in 30,000 people in Scotland, 1 in 36,000 people in northern England, and 1 in 100,000 people in Denmark.
The NINDS conducts and supports research on injuries to the nervous system such as brachial plexus injuries. Much of this research is aimed at finding ways to prevent and treat these disorders.
Aseptic meningitis, encephalitis, or meningoencephalitis requires hospitalization and supportive treatment based on severity. Anti-inflammatory drugs, such as corticosteroids, may be considered under specific circumstances. Although studies have shown that ribavirin, a drug used to treat several other viral diseases, i...
What are the signs and symptoms of Genu valgum, st Helena familial? The Human Phenotype Ontology provides the following list of signs and symptoms for Genu valgum, st Helena familial. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the M...
The first step is to make sure the diagnosis is correct. For more information, patients should consult their health care provider. Health care providers may consult with CDC staff about the diagnosis and treatment of fascioliasis. The drug of choice is triclabendazole. In the United States, this drug is available ...
Pyruvate dehydrogenase deficiency is believed to be a rare condition; however, its prevalence is unknown.
CHMP2B-related frontotemporal dementia results from mutations in the CHMP2B gene. This gene provides instructions for making a protein called charged multivesicular body protein 2B. This protein is active in the brain, where it plays an essential role in transporting proteins that need to be broken down (degraded). Mu...
These resources address the diagnosis or management of cystinosis: - Cystinosis Research Foundation: Treatment - Cystinosis Research Network: Symptoms and Treatment - Gene Review: Gene Review: Cystinosis - Genetic Testing Registry: Cystinosis - Genetic Testing Registry: Cystinosis, ocular nonnephropathic - Geneti...
What causes celiac artery compression syndrome? The cause of celiac artery syndrome is disputed. While it was initially thought to be caused by a restriction of blood supply secondary to compression of the celiac artery (supplies blood to the upper abdominal organs) by the median arcuate ligament (a muscular fibrous ba...
All cases of megalencephalic leukoencephalopathy with subcortical cysts caused by mutations in the MLC1 gene (type 1) and some cases caused by mutations in the HEPACAM gene (type 2A) are inherited in an autosomal recessive pattern. Autosomal recessive inheritance means both copies of a gene in each cell have mutations....
Tardive dyskinesia is a neurological syndrome caused by the long-term use of neuroleptic drugs. Neuroleptic drugs are generally prescribed for psychiatric disorders, as well as for some gastrointestinal and neurological disorders. Tardive dyskinesia is characterized by repetitive, involuntary, purposeless movements. Fe...
These resources address the diagnosis or management of pyridoxine-dependent epilepsy: - Gene Review: Gene Review: Pyridoxine-Dependent Epilepsy - Genetic Testing Registry: Pyridoxine-dependent epilepsy - MedlinePlus Encyclopedia: Generalized tonic-clonic seizure These resources from MedlinePlus offer information a...
Is adenoid cystic carcinoma inherited? While the underlying cause of adenoid cystic carcinoma (ACC) is not known, no strong genetic risk factors have been identified. To our knowledge, only one case of apparent familial ACC has been reported worldwide. In this case, a father and daughter were both affected with ACC of ...
How might intervertebral disc disease be treated? In the absence of red flags, the initial approach to treatment is typically conservative and includes physical therapy and pain medications. In 90% of affected individuals, acute attacks of sciatica usually improve within 4 to 6 weeks without surgical intervention. In c...
Pachyonychia congenita is considered an autosomal dominant condition, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In about half of all cases, an affected person inherits the mutation from one affected parent. The other half of cases result from a new (de novo) mutation in ...
Many people enjoy gambling, whether it's betting on a horse or playing poker on the Internet. Most people who gamble don't have a problem, but some lose control of their gambling. Signs of problem gambling include - Always thinking about gambling - Lying about gambling - Spending work or family time gam...
This condition is generally not inherited but arises from a mutation in the body's cells that occurs after conception. This alteration is called a somatic mutation. A somatic mutation in one copy of the NRAS or BRAF gene is sufficient to cause this disorder.
Pigmentation means coloring. Skin pigmentation disorders affect the color of your skin. Your skin gets its color from a pigment called melanin. Special cells in the skin make melanin. When these cells become damaged or unhealthy, it affects melanin production. Some pigmentation disorders affect just patches of skin. Ot...
While childbirth usually goes well, complications can happen. They can cause a risk to the mother, baby, or both. Possible complications include - Preterm (premature) labor, when labor starts before 37 completed weeks of pregnancy - Problems with the umbilical cord - Problems with the position of the baby, ...
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. However, in rare cases, people who inherit an altered gene do not have enlarged parietal foramina...
Multicentric reticulohistiocytosis is a disease that is characterized by the presence of papules and nodules and associated with arthritis mutilans. The disease can involve the skin, the bones, the tendons, the muscles, the joints, and nearly any other organ (e.g., eyes, larynx, thyroid, salivary glands, bone marrow, h...
Kidney failure, also called end-stage kidney disease or ESRD, means your kidneys no longer work well enough to do their job. You will need treatment to replace the work your kidneys have stopped doing.
A stroke is a medical emergency. Strokes happen when blood flow to your brain stops. Within minutes, brain cells begin to die. There are two kinds of stroke. The more common kind, called ischemic stroke, is caused by a blood clot that blocks or plugs a blood vessel in the brain. The other kind, called hemorrhagic strok...
A hiccup is an unintentional movement of the diaphragm, the muscle at the base of the lungs. It's followed by quick closing of the vocal cords, which produces the "hic" sound you make. There are a large number of causes, including large meals, alcohol, or hot and spicy foods. Hiccups may also start and stop for no obvi...
These resources address the diagnosis or management of cherubism: - Gene Review: Gene Review: Cherubism - Genetic Testing Registry: Fibrous dysplasia of jaw These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surg...
Rheumatoid arthritis is characterized by inflammation of the joint lining. This inflammation causes warmth, redness, swelling, and pain around the joints. The pain of rheumatoid arthritis varies greatly from person to person, for reasons that doctors do not yet understand completely. Factors that contribute to the pain...
Taking action to control your risk factors can help prevent or delay a stroke. If youve already had a stroke, these actions can help prevent another one. Be physically active. Physical activity can improve your fitness level and health. Talk with your doctor about what types and amounts of activity are...
How might Ledderhose disease be treated? There is little evidence regarding the effectiveness of specific treatment approaches for Ledderhose disease. Initial treatment approach may invovle regular (monthly or less often) glucocorticoid injection and soft shoe inserts with cutouts for the nodules. Surgery, such as sele...
This condition 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 t...
In most cases, an autoimmune response is thought to cause immune thrombocytopenia (ITP). Normally, your immune system helps your body fight off infections and diseases. In ITP, however, your immune system attacks and destroys your body's platelets by mistake. Why this happens isn't known. ...
These resources address the diagnosis or management of Cowden syndrome: - Gene Review: Gene Review: PTEN Hamartoma Tumor Syndrome (PHTS) - Genetic Testing Registry: Cowden syndrome - Genetic Testing Registry: Cowden syndrome 1 - Genetic Testing Registry: Cowden syndrome 2 - National Cancer Institute: Genetic Testi...
Coronary microvascular disease can affect both men and women. However, women may be at risk for coronary microvascular disease if they have lower than normal levels of estrogen at any point in their adult lives. (This refers to the estrogen that the ovaries produce, not the estrogen used in hormone therapy.) Low estrog...
In many cases, RAS has no symptoms until it becomes severe. The signs of RAS are usually either high blood pressure or decreased kidney function, or both, but RAS is often overlooked as a cause of high blood pressure. RAS should be considered as a cause of high blood pressure in people who ...
Aromatic l-amino acid decarboxylase (AADC) deficiency is an inherited condition that affects the way signals are passed between certain cells in the nervous system. Individuals affected by this condition often have severe movement disorders, abnormal eye movements, autonomic symptoms, and neurological impairment. The c...
Intestinal pseudo-obstruction is a rare condition with symptoms that resemble those caused by a blockage, or obstruction, of the intestines, also called the bowel. However, when a health care provider examines the intestines, no blockage exists. Instead, the symptoms are due to nerve or muscle problems that affect the ...
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...
Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure fa...
How is Usher syndrome inherited? Usher syndrome is inherited in an autosomal recessive manner. This means that a person must have a change (mutation) in both copies of the disease-causing gene in each cell to have Usher syndrome. One mutated copy is typically inherited from each parent, who are each referred to as a ca...
Face injuries and disorders can cause pain and affect how you look. In severe cases, they can affect sight, speech, breathing and your ability to swallow. Broken bones, especially the bones of your nose, cheekbone and jaw, are common facial injuries. Certain diseases also lead to facial disorders. For example, nerve...
Familial isolated hyperparathyroidism (FIHP) is an inherited form of primary hyperparathyroidism that is not associated with other features. The age of diagnosis varies from childhood to adulthood. In FIHP, tumors involving the parathyroid glands cause the production and release of excess parathyroid hormone, which in ...
Heart failure is a condition in which the heart can't pump enough blood to meet the body's needs. Heart failure does not mean that your heart has stopped or is about to stop working. It means that your heart is not able to pump blood the way it should. It can affect one or both sides of the heart. The weakening of t...
These resources address the diagnosis or management of abetalipoproteinemia: - Genetic Testing Registry: Abetalipoproteinaemia - MedlinePlus Encyclopedia: Bassen-Kornzweig syndrome - MedlinePlus Encyclopedia: Malabsorption - MedlinePlus Encyclopedia: Retinitis pigmentosa - MedlinePlus Encyclopedia: Stools - floati...
Hereditary pancreatitis is thought to be a rare condition. In Europe, its prevalence is estimated to be 3 to 6 per million individuals.
Melanoma is the fastest growing and most invasive type of skin cancer. This cancer arises from overgrowth of melanocytes. Melanocytes are specialized skin cells that produce a pigment called melanin.
What causes hereditary lymphedema type II? The cause of hereditary lymphedema type II is unknown. The condition is thought to be genetic because it tends to run in families. Researchers have studied many genes associated with the lymphatic system; however, to date, no specific genetic change has been associated with th...
Cerebral arteriosclerosis can lead to life threatening health events such as ischemic or hemorrhagic strokes. People who survive stroke may have long-term neurological and motor impairments.
Ocular albinism is a genetic condition that primarily affects the eyes. This condition reduces the coloring (pigmentation) of the iris, which is the colored part of the eye, and the retina, which is the light-sensitive tissue at the back of the eye. Pigmentation in the eye is essential for normal vision. Ocular albini...
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.
How is intellectual disability-developmental delay-contractures syndrome inherited? Intellectual disability-developmental delay-contractures syndrome syndrome is inherited in an X-linked recessive manner and is caused by mutations in the ZC4H2 gene. A condition is considered X-linked if the gene with the mutation that ...
Familial cold autoinflammatory syndrome is a condition that causes episodes of fever, skin rash, and joint pain after exposure to cold temperatures. These episodes usually begin in infancy and occur throughout life. People with this condition usually experience symptoms after cold exposure of an hour or more, although...
In many cases, treatment is effective in completely or partially controlling lupus nephritis, resulting in few, if any, further complications. However, even with treatment, 10 to 30 percent of people with lupus nephritis develop kidney failure, described as end-stage renal disease when treated with blood-filtering trea...
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 t...
Carbon monoxide (CO) is a gas that has no odor or color. But it is very dangerous. It can cause sudden illness and death. CO is found in combustion fumes, such as those made by cars and trucks, lanterns, stoves, gas ranges and heating systems. CO from these fumes can build up in places that don't have a good flow of fr...
Your thyroid is a butterfly-shaped gland in your neck, just above your collarbone. It is one of your endocrine glands, which make hormones. Thyroid hormones control the rate of many activities in your body. These include how fast you burn calories and how fast your heart beats. All of these activities are your body's m...
Summary : Club drugs are group of psychoactive drugs. They act on the central nervous system and can cause changes in mood, awareness, and how you act. These drugs are often abused by young adults at all-night dance parties, dance clubs, and bars. They include - Methylenedioxymethamphetamine (MDMA), also known as...
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.
These resources address the diagnosis or management of glutaric acidemia type II: - Baby's First Test - Genetic Testing Registry: Glutaric aciduria, type 2 These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surge...
These resources address the diagnosis or management of 3-methylglutaconyl-CoA hydratase deficiency: - Baby's First Test - Genetic Testing Registry: 3-Methylglutaconic aciduria - MedlinePlus Encyclopedia: Metabolic Acidosis These resources from MedlinePlus offer information about the diagnosis and management of var...
Familial forms of prion disease are inherited in an autosomal dominant pattern, which means one copy of the altered PRNP gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent. In some people, familial forms of prion disease are caused...
Supravalvular aortic stenosis (SVAS) is a heart defect that develops before birth. This defect is a narrowing (stenosis) of the large blood vessel that carries blood from the heart to the rest of the body (the aorta). The condition is described as supravalvular because the section of the aorta that is narrowed is locat...
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.
Bipolar disorder is a serious mental illness. People who have it go through unusual mood changes. They go from very happy, "up," and active to very sad and hopeless, "down," and inactive, and then back again. They often have normal moods in between. The up feeling is called mania. The down feeling is depression. The...
There is no cure and there are no treatments that can stop the progression of Parry-Romberg syndrome. Reconstructive or microvascular surgery may be needed to repair wasted tissue. The timing of surgical intervention is generally agreed to be the best following exhaustion of the disease course and completion of facial ...
What causes non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency? Non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency (NCAH) is caused by changes (mutations) in the CYP21A2 gene. This gene provides instructions for making an enzyme called 21-hydroxylase, which is found in ...
Isolated ectopia lentis (IEL) is a genetic disorder that affects the positioning of the lens in the eyes. In individuals with IEL, the lens in one or both of the eyes is off-center. Symptoms of IOL usually present in childhood and may include vision problems such as nearsightedness (myopia), blurred vision (astigmatism...
Langer-Giedion syndrome is a rare condition; its incidence is unknown.