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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.
Disease

Diabetic retinopathy

Good diabetes management and regular exams can help prevent this diabetes complication that affects the eyes. Find out how.
Disease

Diffuse large B-cell lymphoma

Find out more about the symptoms, diagnosis and treatment of this type of non-Hodgkin lymphoma.
Disease

Central nervous system (CNS) lymphoma

Learn about central nervous system lymphoma, a cancer of the brain and nervous system, including symptoms, causes, diagnosis and treatment options.
Disease

Mitral valve disease

Learn more about diseases that affect the valve between the left heart chambers, including mitral valve regurgitation and mitral valve stenosis.
Disease

Atrial flutter

Learn more about this condition in which the heart's upper chambers beat too quickly, causing a rapid, but usually regular, heart rhythm.
Disease

Heart disease

Learn about symptoms, causes and treatment of cardiovascular disease, a term describing a wide range of conditions that can affect the heart.
Disease

Allergies

Allergy symptoms can range from mild to severe, even life-threatening. Find out what treatments and prevention tips can help.
Disease

Klinefelter syndrome

In this condition, a genetic male has an extra X sex chromosome. This may affect the growth of testicles and result in low testosterone.
Disease

Thalassemia

Some forms of this inherited blood disorder usually show up before the age of 2. Often, they cause anemia. Worse forms of the disease require regular blood transfusions.
Disease

Norovirus infection

This highly contagious virus spreads through contaminated food, water or surfaces and causes vomiting and diarrhea. Learn ways to protect yourself.
Disease

Porphyria

This group of disorders results from a buildup of natural chemicals in the body that affect the nervous system and skin. Learn how to avoid symptom triggers.
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