In-depth

Complete blood count

A complete blood count can be used to evaluate your overall health, detect a wide range of disorders, or monitor a medical condition or treatment.

Headache

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

Swollen lymph nodes

Swollen lymph nodes usually indicate an infection, particularly in children. However, there are many causes, ranging from the common cold to cancer.

Tonsillectomy

When is a tonsillectomy needed for throat infections, sleep apnea or other tonsil problems? Find out when it might help.

Tonsillitis

Tonsillitis — a common cause of sore throat in children — is usually treated with self-care and, in some cases, antibiotics.

Aug. 04, 2012

You Are ... The Campaign for Mayo Clinic

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