MedlinePlus Medical Encyclopedia: Mastoiditis - redness and swelling behind ear

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Mastoiditis - redness and swelling behind ear

Mastoiditis is an infection of the bony air cells in the mastoid bone, located just behind the ear. It is rarely seen today because of the use of antibiotics to treat ear infections. This child has noticeable swelling and redness behind his right ear because of mastoiditis.

Update Date: 2/19/2007

Updated by: Alden J. Pearl, M.D., Clinical Assistant Professor, Department of Otolaryngology, State University of New York Health Science Center at Brooklyn, Brooklyn, NY. Review provided by VeriMed Healthcare Network.

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