In-depth

Prevention

Childhood vaccines

Wonder about the benefits and risks of childhood vaccines? Get answers to your questions.

Childhood vaccines

Vaccines for adults

Symptoms

Fatigue

Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.

Nausea and vomiting

Runny nose

Runny nose: What's causing your sniffles?

Symptom Checker

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

Tests and diagnosis

Chest X-rays

Jan. 15, 2015