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Acute mastoiditis is an infection of the mastoid bone, which is located behind the ear. It is usually caused by a bacterial infection that spreads from the middle ear to the mastoid bone. Symptoms of acute mastoiditis include ear pain, fever, swelling behind the ear, and drainage from the ear. Treatment typically involves antibiotics and sometimes surgery to drain the infection.
All of the following must be considered when interpreting clinical findings and are too extensive to be covered on this site: