ADan amyloidosis is a rare, progressive, and fatal disorder caused by the accumulation of abnormal proteins called amyloid in the body's organs and tissues. It is caused by mutations in the gene that produces transthyretin (TTR), a protein that tr...

ADCY5-Related Dyskinesia is a rare neurological disorder caused by mutations in the ADCY5 gene. It is characterized by involuntary, repetitive movements of the face, trunk, and limbs. Symptoms usually begin in childhood and can range from mild to ...

What Is Tobacco Addiction? When people are addicted, they have a compulsive need to seek out and use a substance, even when they understand the harm it can cause. Tobacco products -- cigarettes, cigars, pipes, and smokeless tobacco -- can ...

What Is Tobacco Addiction? When people are addicted, they have a compulsive need to seek out and use a substance, even when they understand the harm it can cause. Tobacco products -- cigarettes, cigars, pipes, and smokeless tobacco -- can ...

Addison disease, also known as primary adrenal insufficiency, is a rare disorder that occurs when the adrenal glands do not produce enough of the hormone cortisol and, in some cases, the hormone aldosterone. Symptoms of Addison disease can include...

Addison's disease, also known as primary adrenal insufficiency, is a rare disorder of the adrenal glands. It occurs when the adrenal glands do not produce enough of the hormone cortisol and, in some cases, the hormone aldosterone. Symptoms of Addi...

Adducted thumbs-arthrogryposis syndrome, Christian type is a rare genetic disorder characterized by the presence of adducted thumbs, joint contractures, and other physical abnormalities. It is caused by a mutation in the HOXD13 gene and is inherit...

Adenine phosphoribosyltransferase deficiency (APRT deficiency) is an inherited disorder caused by a deficiency of the enzyme adenine phosphoribosyltransferase (APRT). This enzyme is involved in the breakdown of adenine, a component of DNA and RNA....

Adenocarcinoma of the gallbladder and extrahepatic biliary tract is a type of cancer that affects the gallbladder and the bile ducts outside of the liver. It is a rare form of cancer that is usually diagnosed in people over the age of 60. Symptoms...

Adenohypophysitis is a rare autoimmune disorder that affects the pituitary gland. It is characterized by inflammation of the pituitary gland, which can lead to a decrease in the production of hormones that regulate growth, metabolism, and other bo...

Adenoid basal carcinoma of the cervix uteri is a rare type of cervical cancer. It is a slow-growing cancer that is usually found in women over the age of 50. It is characterized by the presence of cells that look like basal cells, which are the mo...

Salivary gland type malignant neoplasm arising from bronchial seromucinous glands. Composed of epithelial and myoepithelial cells in cribriform, tubular and solid growth patterns....

Adenoid cystic carcinoma (ACC) is a rare type of cancer that develops in the salivary glands, the glands that produce saliva. It is a slow-growing cancer that can spread to other parts of the body, such as the lungs, bones, and lymph nodes. Sympto...

Adenoid cystic carcinoma of the cervix uteri is a rare type of cancer that affects the cervix, which is the lower part of the uterus. It is a slow-growing cancer that can spread to other parts of the body, such as the lungs, liver, and bones. Symp...

Adenoma of the pancreas is a rare type of tumor that develops in the pancreas. It is usually benign (non-cancerous) and is made up of glandular tissue. Adenomas of the pancreas can cause abdominal pain, nausea, vomiting, and jaundice. Treatment us...

Adenosarcoma of the cervix uteri is a rare type of cancer that affects the cervix, which is the lower part of the uterus. It is a type of sarcoma, which is a cancer that develops from connective tissue. Adenosarcoma of the cervix uteri is usually ...

Adenosarcoma of the corpus uteri is a rare type of cancer that affects the uterus. It is a type of mixed tumor, meaning it is composed of both benign and malignant cells. It is usually found in women over the age of 40 and is often mistaken for a ...