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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.
Disease

Peutz-Jeghers syndrome

This inherited condition causes polyps to grow in the digestive tract and increases the risk of cancer. Regular screening helps reduce some risks.
Disease

Cervical cancer

Screening with Pap tests can reduce the risk of this cancer that begins in the cervix. Learn more about symptoms, causes, prevention and treatment.
Disease

Liver cancer

Learn how doctors use surgery, liver transplant, radiation, chemotherapy and other methods to treat hepatocellular carcinoma and other types of liver cancer.
Disease

Salivary gland tumors

Learn about this rare tumor that forms in the salivary glands. Treatments include surgery and radiation therapy.
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