What are the risk factors for 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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Risk factors for OE include the following:

  • Previous episodes of OE
  • Swimming, diving, or participating in aquatic activities
  • Use of earplugs or probing of the EAC (possibly secondary to trauma to the EAC)
  • Hot, humid weather
  • Use of a hearing aid
  • Coexistence of eczema, allergic rhinitis, or asthma
  • Comorbidities such as diabetes mellitus, AIDS, leukopenia, or malnutrition

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