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Disease

Atrial flutter

In this condition, the heart's upper chambers beat too quickly, causing a fast, but usually regular, heart rhythm. Learn how it's treated.
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

Cutaneous B-cell lymphoma

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

Shingles

Learn more about symptoms, causes, treatment and vaccine prevention of this painful condition affecting the nerves.
Disease

Mosquito bites

Learn about the many ways to prevent mosquito bites and how to ease the itch if you are bitten.
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

Atypical hyperplasia of the breast

Learn how a diagnosis of atypical lobular hyperplasia or atypical ductal hyperplasia affects your risk of breast cancer and what you can do.
Disease

Hepatitis B

This serious liver infection is caused by a virus that spreads easily. Learn about the symptoms, treatment and how to prevent it.
Disease

Esophageal spasms

This digestive condition is sometimes mistaken for heart pain. Learn about symptoms and treatment for these painful contractions in the esophagus.
Disease

Schwannoma

Learn about the diagnosis and treatment of this usually benign, slow-growing tumor that begins in peripheral nerve cells.
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