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Hearing loss – surgery or hearing aids!

Posted on 18 October, 2014 by Dr Chyrisse Heine

Hearing loss is categorized according to site of lesion (site of the problem). If the pathology lies in the outer or middle ear, the hearing loss is categorized as a conductive hearing loss. If the pathology lies in the inner ear, central auditory nervous system (CANS) or auditory cortex, the hearing loss is a sensorineural hearing loss (sensory part is the inner ear and neural part is the CANS and cortex). Examples of pathologies include:

  • Outer ear – e.g. Atresia (missing ear lobe) or microsia (small underdeveloped ear lobe)
  • Middle ear – e.g. Middle ear infection, Eustachian tube blockage, Tympanic membrane (eardrum) perforation, otosclerosis (bony growth of the stapes middle ear bone)
  • Inner ear – e.g. Noise induced hearing loss, presbycusis (aging), Meniere’s diseases, vestibular neuronitis (affects balance).

CANS and auditory cortex e.g. Multiple sclerosis, stroke, head injury