In-depth

Prevention

Car seat safety

Risk factors

High blood pressure (hypertension)

Symptoms

Headache

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

Nausea and vomiting

Symptom Checker

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

Tests and diagnosis

CT scan

MRI

MRI uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body.

June 25, 2014