In-depth

Abdominal pain

Find out what causes different types of abdominal pain.

Diarrhea

Here's information about common causes of diarrhea and when to see your doctor.

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Muscle pain

Muscle pain can occur just about anywhere in your body, and there are lots of potential causes.

Feb. 15, 2012