Mayo Clinic Care Network Content
Definitions

Mastoiditis


Overview

Mastoiditis is usually caused by a middle ear infection. This infection can result in damage to the mastoid bone and the formation of pus-filled cysts.

Symptoms

Symptoms include redness, swelling and tenderness around the bone. Fever, ear pain and discharge are possible.

Treatments

Antibiotics can usually clear the infection. In severe cases, surgery may be needed.