HPV infection
Overview HPV infection is a viral infection that commonly causes skin or mucous membrane growths (warts). There are more than 100 varieties of human papillomavirus (HPV). Some types of HPV…
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Overview HPV infection is a viral infection that commonly causes skin or mucous membrane growths (warts). There are more than 100 varieties of human papillomavirus (HPV). Some types of HPV…
Overview A hot flash is the sudden feeling of warmth in the upper body, which is usually most intense over the face, neck and chest. Your skin might redden, as…
Overview Horner syndrome signs Horner syndrome is a combination of signs and symptoms caused by the disruption of a nerve pathway from the brain to the face and eye on…
Overview Parts of the immune system Lymph node clusters Hodgkin’s lymphoma — formerly known as Hodgkin’s disease — is a cancer of the lymphatic system, which is part of your…
Overview Hoarding disorder is a persistent difficulty discarding or parting with possessions because of a perceived need to save them. A person with hoarding disorder experiences distress at the thought…
Overview Hives on white skin Hives on brown skin Hives — also known as urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts that range in size from…
Overview Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body’s ability to…
Overview Histoplasmosis is an infection caused by breathing in spores of a fungus often found in bird and bat droppings. The infection is most commonly spread when these spores are…
Overview Hirsutism Hirsutism (HUR-soot-iz-um) is a condition in women that results in excessive growth of dark or coarse hair in a male-like pattern — face, chest and back. With hirsutism,…
Overview Hirschsprung’s disease Hirschsprung’s (HIRSH-sproongz) disease is a condition that affects the large intestine (colon) and causes problems with passing stool. The condition is present at birth (congenital) as a…
Overview Hip labral tear A hip labral tear involves the ring of cartilage (labrum) that follows the outside rim of your hip joint socket. Besides cushioning the hip joint, the…
Overview Hip impingement occurs when the ball and socket of the hip joint don’t fit together properly. The restricted motion damages cartilage and can cause pain and arthritis in young…
Overview A hip fracture is a serious injury, with complications that can be life-threatening. The risk of hip fracture rises with age. Risk increases because bones tend to weaken with…
Overview Hip dysplasia is the medical term for a hip socket that doesn’t fully cover the ball portion of the upper thighbone. This allows the hip joint to become partially…
Hilar cholangiocarcinoma is a type of bile duct cancer that occurs in the bile ducts that lead out of the liver (hepatic ducts) and join with the gallbladder. Hilar cholangiocarcinomas…