Sensorineural hearing loss - causes

Sensorineural hearing loss

- Congenital: TORCH infection, trisomy 18, 21, Alport's synd, Usher's synd, aplasia of cochlea.

- Acquired: meningitis, otitis, mumps, cmv, herpes, rubeola, sickle cell, dm, temporal bone fracture, leukemia, acoustic neuroma, neurofibromatosis, autoimmune hypothyroidism, hypoparathyroidism

- Conductive: cerumen impaction, FB, otitis with an effusion.

Causes of Auditory neuropathy and cochlear lesions:

    • Genetic

      • Non-syndromic: Otoferlin

      • Syndromic: CMT, HMSN (Lom type) NDRG1 gene, OPCD, SCD, Friedreich's ataxia, cerebro-oculofacialskeletal syndrome, Usher syndrome.

      • Autoimmune: Cogan's syndrome

      • Infectious: Neurosyphilis, HIV, CMV in HIV positive patients, Typhus, Ramsay-Hunt syndrome (HZV oticus)

      • Neonatal illness: Hyperbilrubinemia of prematurity

      • Toxic/metabolic: Facial-auditory nerve oxalosis, alcohol, organic mercury and uremia

      • Idiopathic: Meniere's disease

      • Other: transient auditory neuropathy caused by high temperature.