In-depth

Dehydration and youth sports

Headache

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

Heat and exercise

Tachycardia

Tachycardia, a rapid heart rate, is caused by an abnormality in your heart's electrical impulses. Tachycardia can cause serious complications, including sudden cardiac arrest.

Urinalysis

Urinalysis can be used to assess your overall health, detect a wide range of disorders, or monitor a medical condition or treatment.

X-ray

X-rays are a form of radiation that can make images of your bones and internal organs.

Jul. 12, 2014

You Are ... The Campaign for Mayo Clinic

Mayo Clinic is a not-for-profit organization. Make a difference today.