The body needs some cholesterol to build healthy cells. But high cholesterol can raise the risk of heart disease. Lifestyle changes can help.
Disease
Hilar cholangiocarcinoma
Learn about how this type of bile duct cancer is diagnosed and treated.
Disease
Hip dysplasia
In infancy, this condition often can be corrected with a soft brace. Older children and young adults might require surgery to correct the misalignment.
Disease
Hip fracture
The risk of breaking a hip increases with age. Learn about lifestyle changes that can keep bones strong and reduce risk of breaking.
Disease
Hip labral tear
Sports such as soccer, football and golf can increase your risk of damaging the ring of cartilage that helps cushion and stabilize your hip joint.
Disease
Hirschsprung's disease
This digestive disorder that's present at birth affects the nerves in the colon. It causes severe constipation but can be treated.
Disease
Hirsutism
Learn more about causes and complications of unwanted excess hair in women and what self-care methods and medical treatments are effective.
Disease
Histoplasmosis
Learn more about the symptoms and treatment of this sometimes life-threatening disease caused by fungal spores in bird and bat droppings.
Disease
Hives and angioedema
Learn more about these common but short-lived skin conditions, their symptoms, causes and home remedies, and how to prevent them.
Disease
Hoarding disorder
This mental health condition involves ongoing difficulty parting with possessions, leading to severe clutter and a risk to safety.
Disease
Hodgkin lymphoma (Hodgkin disease)
Learn how this cancer differs from other lymphomas. Find out about risk factors and treatments, such as chemotherapy, radiation and bone marrow transplant.
Disease
Horner syndrome
Find out about Horner syndrome, an interruption in nerve signals from the brain to the eye and face on one side of the body.