What causes chronic otitis externa (OE)?

Updated: Mar 09, 2020
  • Author: Ariel A Waitzman, MD, FRCSC; Chief Editor: Ravindhra G Elluru, MD, PhD  more...
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Answer

Chronic OE is a fairly common condition that is sometimes the result of incomplete treatment of acute OE. [13] More often, however, chronic OE is caused by overmanipulation of the ear canal as a consequence of cleaning and scratching. Such overmanipulation results in a low-grade inflammatory response that causes further itching of the skin. Eventually, the skin thickens, and canal stenosis may occur.


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