In CDH, a baby's diaphragm — the muscle that separates the chest from the abdomen — develops a hole called a hernia. Learn about treatment before birth.
Disease
Congenital heart defects in children
Learn about symptoms, tests and treatments for children born with a problem in the structure of the heart.
Disease
Congenital heart disease in adults
A heart problem present at birth may not cause symptoms until adulthood. Learn how adult congenital heart disease is treated and what complications may occur.
Disease
Contact dermatitis
Contact with certain substances, such as poison ivy, skin lotions and detergents, can cause an itchy rash. Here's how to manage this common form of dermatitis.
Disease
Coronary artery disease
Know the warning signs of this common heart condition often caused by clogged, narrowed arteries and how lifestyle changes can lower your risk.
Disease
Coronavirus disease 2019 (COVID-19)
Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.
Disease
Corticobasal degeneration (corticobasal syndrome)
Learn about this rare disease that affects brain cells. The disease can make it hard to speak, move and think.
Disease
Creutzfeldt-Jakob disease
Learn what can put someone at risk of developing this rare brain disorder that causes dementia.
Disease
Crohn's disease
Learn about symptoms and treatment for this debilitating, but treatable, digestive condition.
Disease
Cyclothymia (cyclothymic disorder)
Also called cyclothymic disorder, this mood disorder causes emotional ups and downs that are less extreme than bipolar disorder. Learn about treatment.
Disease
Dandruff
Learn about the causes of this sometimes embarrassing, flaky scalp disorder and which medicated shampoos and self-care habits may help control it.
Disease
De Quervain tenosynovitis
This painful condition affects the tendons on the thumb side of the wrist. A splint or brace can rest the tendons. Ice also is helpful.