Mastoiditis is an infection of the air cells behind the ear, usually caused by untreated middle ear infections. It can be treated with antibiotics, surgery, or both, and may have serious complications if left untreated. Mastoiditis is the inflammation of a portion of the temporal bone referred to as the mastoid air cells. The mastoid air cells are epithelium lined bone septations that are continuous with the middle ear cavity. WebMD discusses the symptoms, causes, and treatment of mastoiditis , a sometimes serious bacterial infection of a bone behind the ear. Mastoiditis , infection of mastoid bone, results from spread of middle ear infection like bacterial infections, presenting with redness or swelling behind ear.
