Keratosis obturans | Definition | Aetiology | Clinical features | Treatment

Definition :

Keratosis obturans is a rare external auditory canal disease. It is seen as a pearly white mass surrounded by granulations which can cause absorption of bone of the external auditory meatus due to pressure. It may be unilateral or bilateral.

Accumulation of keratin debris deeper within the external auditory canal, which may cause inflamed epithelium and bone remodelling.

Aetiology :

Age : 
  • It is usually between 15 to 20 years.
Association : 
  • Bronchiectasis.
  • Chronic paranasal sinus disease.
Clinical Features :
  • Severe pain.
  • Deafness is present.
  • Otorrhoea may occur.
  • External auditory canal shows acute otitis externa.
  • Facial palsy is rarely present.
  • Conductive hearing loss.
Treatment :
  • Usually treated by EAC toilet: For removal of the keratin plug
  • Rarely needs surgical intervention.
  • Granulation tissue may be managed by removal, cauterization, or the use of topical steroid drops.