Hearing loss and deafness

Hearing loss and deafness

Causes of hearing loss

  • External ear
    • Impacted cerumen
    • Foreign bodies
    • External otitis
  • Middle ear
    • Otitis media
    • Serous otitis
    • Otosclerosis
    • Tympanic membrane trauma
    • Cholesteatoma
    • Acoustic neuroma
  • Inner ear
    • Ménière’s disease
    • Noise-induced hearing loss
    • Presbycusis
    • Ototoxicity

Types of hearing loss

  • Conductive hearing loss
    • Sound transmission to inner ear impaired
      • Patients actually hear better in noisy environments
      • Patient often speaks softly
      • Identify and treat cause
      • Suggest hearing aid
    • Caused by
      • Otitis media with effusion
      • Impacted cerumen
      • Perforation of TM
      • Otosclerosis
      • Narrowing of the external auditory canal
  • Sensorineural hearing loss 
    • Results in ability to hear sound but  inability to understand speech
      • Can lead to misunderstanding by others
      • Hearing aids make sounds louder but not clearer
    • Caused by
      • Impairment of the inner ear
      • Vestibulocochlear nerve (CN VIII) damage
      • Congenital and hereditary factors
      • Noise trauma
      • Aging (presbycusis)
      • Meniere’s disease
    • Ototoxic drugs
      • Aspirin
      • NSAIDs
      • Antibiotics
      • Loop diuretics
      • Chemotherapy drugs
  • Mixed hearing loss
    • Central and functional hearing loss

Share:

More Posts

Aspirin overdose

Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve mild to moderate aches and pains, swelling, and fever. Aspirin overdose occurs when someone accidentally

Pulmonary edema

Pulmonary edema is an abnormal buildup of fluid in the lungs. This buildup of fluid leads to shortness of breath. Causes Pulmonary edema is often