Otolaryngology Book

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Chronic Otitis Externa

Aka: Chronic Otitis Externa
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  1. Causes
    1. Fungal Otitis Externa
    2. Allergic Otitis Externa
    3. Inadequately treated Acute Otitis Externa
    4. Eczematous Dermatitis
    5. Psoriasis
    6. Seborrhea
    7. Recent Tympanostomy Tube placement (due to drainage)
    8. Hypersensitivity Reaction to oto-topical agent
    9. Allergic Contact Dermatitis
      1. Metal earrings (esp. nickel)
      2. Hearing Aid plastic case
      3. Cosmetics
      4. Shampoos
  2. Symptoms
    1. Pruritus
    2. Mild Otalgia
  3. Signs
    1. Erythematous ear canal
    2. Lichenification may accompany erythema
  4. Management
    1. See Otitis Externa for general measures
    2. Treat specific causes (see above)
      1. Fungal Otitis Externa
      2. Allergic Otitis Externa

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