Browse comprehensive, doctor-reviewed information on 4 health conditions.
Shingles (herpes zoster) is a viral infection that causes a painful rash. It is caused by the varicella-zoster virus, th...
Skin cancer is the abnormal growth of skin cells, most often developing on skin exposed to the sun. The three major type...
Sleep apnea is a serious sleep disorder in which breathing repeatedly stops and starts during sleep. Obstructive sleep a...
A stroke occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getti...