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Disease

Gingivitis

Gingivitis is a common and mild form of gum disease that causes irritation, redness and swelling of your gums.
Disease

Graves' disease

Learn about the symptoms, causes and treatment of this immune system condition that results in too much thyroid hormone.
Disease

Barrett's esophagus

In this digestive condition, the esophagus becomes damaged by repeated exposure to stomach acids. Learn about treatments to improve symptoms and lower cancer your risks.
Disease

Hepatitis A

This contagious liver infection is caused by a virus. Learn more about its symptoms, treatment and prevention, including the hepatitis A vaccine.
Disease

Urine color

Foods and medicines can change the color of urine. But a color change also could be a sign of disease.
Disease

Traveler's diarrhea

Learn how to avoid contaminated food and water that may lead to this common travel hazard. Plus, find out what to do if it strikes.
Disease

Thunderclap headaches

These headaches are sudden and severe, and can warn of a life-threatening condition — so seek immediate medical attention.
Disease

Multiple sclerosis

This nervous system condition causes a range of symptoms. While there's no cure, it's possible to have long periods of remission.
Disease

Craniopharyngioma

Learn more about this noncancerous tumor that forms near the brain's pituitary gland, including diagnosis and treatment options.
Disease

Oral lichen planus

This ongoing inflammatory condition results in white, lacy patches or red, swollen tissues or open sores inside your mouth that may cause burning or pain.
Disease

Liver fibrosis

Repeated liver injury can cause scarring that stiffens the liver and gradually reduces its ability to function. Learn about symptoms and treatment for this often-silent liver condition.
Disease

Hiatal hernia

A hiatal hernia occurs when part of the stomach bulges into the chest. It can cause severe heartburn but is treatable.

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