Article: otitis media


The Mosby Medical Encyclopedia
10-01-1996
otitis media, swelling or infection of the middle ear, a common disease of childhood. Acute otitis media is usually caused by Haemophilus influenzae or Streptococcus pneumoniae. Chronic otitis media is usually caused by germs such as Proteus, Klebsiella, and Pseudomonas. Allergy, fungus, and several viruses also may be causes. An upper chest respiratory infection often occurs before the onset of otitis media. Germs and viruses enter the middle ear through the eustachian tube, which opens into the mouth and throat. Blockage of the eustachian tube and gathering of fluids may increase pressure within the middle ear, forcing ...

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