Otitis externa

From greek.doctor
  • External ear canal
    • Outer third is cartilage, inner 2/3 is bone
    • Thin keratinized stratified squamous epithelium
    • Contains ceruminous glands -> produce cerumen
    • Diseases
      • Swimming, Q-tip use, scratching
      • Acute
        • Diffuse otitis externa
        • Circumscribed otitis externa
        • Bullous otitis externa
      • Chronic
        • Necrotizing otitis externa (pseudomonas)
        • Eczema
        • Fungal infection (otomycosis)
        • Cholesteatoma
    • Symptoms
      • Otorrhoea
      • Pain
      • Conductive hearing loss‎