ear, nose, and throat disorders
Mastoiditis
Introduction
Mastoiditis is a bacterial infection in the mastoid process, which is the prominent bone behind the ear. Mastoiditis usually occurs when untreated or inadequately treated acute otitis media spreads from the middle ear into the surrounding bone—the mastoid process (part of the temporal bone—the skull bone that contains part of the ear canal, the middle ear, and the inner ear) ). Most mastoid infections are caused by pneumococcus bacteria. Pneumococcal Vaccine have significantly decreased infection with pneumococcus bacteria, and mastoiditis is uncommon. Inadequately treated mastoiditis can result in 