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Disease

Congenital adrenal hyperplasia

This group of inherited genetic conditions limits the adrenal glands' ability to make certain vital hormones.
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

Congenital mitral valve anomalies

These heart conditions present at birth cause the mitral valve to leak or become narrowed. Know the symptoms and treatment.
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

Drug addiction (substance use disorder)

Drug addiction affects your brain and behavior to the point where you can't control your use of legal or illegal drugs, even when you know they cause harm.
Disease

Drug allergy

Learn which medicines are more likely to cause an allergic reaction, what symptoms look like and what treatments can calm such a reaction.
Disease

Dural arteriovenous fistulas

Learn about these rare, irregular connections that can occur between arteries and veins in the protective covering of the brain and spinal cord.
Disease

Dust mite allergy

This allergy can lead to year-round sniffles and sneezes. Here's how to find relief.
Disease

Ebstein anomaly

In this rare heart defect, the tricuspid heart valve didn't form properly. This can affect the heart's ability to pump blood. Know the risks and symptoms.
Disease

Egg allergy

This allergy can cause a serious reaction in children and adults. Learn the symptoms and what to do in case of a serious reaction.
Disease

Ehrlichiosis and anaplasmosis

Learn how to prevent and treat the tick-borne diseases ehrlichiosis and anaplasmosis.
Disease

Exercise-induced asthma

Regular exercise is good for you in many ways, but for some people, exercise can trigger breathing problems. Medicine can help.
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