Detailed information on living with a pacemaker or implantable cardioverter defibrillator

Cardiovascular diseases include coronary heart disease, stroke, high blood pressure, and rheumatic heart disease.

Constipation is not being able to have bowel movements often enough. It can cause pain and other symptoms. Learn more about the causes, tests, and treatments for this common GI (gastrointestinal) problem.

Detailed information on toxic epidermal necrolysis, including symptoms and treatment.

Detailed information on tinea versicolor, including symptoms, diagnosis, and treatment.

Detailed information on the most common skin sweating disorders, including prickly heat and excessive sweating

Detailed information on dermatology and common skin conditions

Barrett esophagus occurs when the normal cells that line your food pipe (esophagus) turn into cells not usually found in your body. The new cells take over because the lining of the esophagus has been damaged. The new, abnormal cells are called specialized columnar cells or intestinal metaplasia.

Eyeglasses are the most common form of eyewear used to correct or improve many types of vision problems. Contact lenses are worn directly on the cornea of the eye.

Detailed information on first aid for eyes and eye safety.