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Eczematous Otitis Externa | Definition | Clinical Features | Treatment

Definition :

 This is one type of allergic dermatitis of the external auditory canal of the ear. 

 Clinical Features :
  • Irritation and oedema of the canal may occur.
  • Weeping eczema with crusting occurs in chronic cases.
  • Secondary infection may lead to acute otitis externa. 
  • Stenosis gradually occurs, due to oedema and fibrosis. 
  • Fissuring and scaling of the external canal at the entrance is the result of a chronic allergy.
Treatment :

1. Acute stage :
  • Steroids applied locally are very helpful.
  • Antibiotics are administered locally and systemically.
  • Antihistamines are prescribed. 
2. Chronic stage :
  • The steroid with antibiotics is very helpful. 
  • 10 % of silver nitrate is applied to fissures.
  • Dilatation of stenosis by indwelling polyethene tubes or plastic surgery may be required.
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