In-depth

Definition

Shingles

Prevention

Vaccines for adults

Symptoms

Fatigue

Headache

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

Symptom Checker

Foot pain? Headache? Sore throat? Skin rash? Use the Symptom Checker to find out what's causing your symptom.

Dec. 11, 2014