DSC_4832 (s)


Generally, hearing loss can be categorised as congenital (by birth) or acquired (after birth). The most common causes for congenital hearing loss are: 

  • Genetic – hearing loss in more than half of the children is genetic in nature
  • Complications during pregnancy due to infections such as like German Measles, Cytomegalovirus (CMV), Toxoplasmosis, Rubella etc. Certain medications (ototoxic drugs) can also damage a baby’s hearing system before birth.
  • Ear malformations such as Atresia, Anotia, Microtia etc.

The most common causes for acquired hearing loss are:

  • Premature birth
  • Neonatal jaundice
  • Infections such as Meningitis, Measles or Mumps
  • Chronic ear infections such as Otitis Media or Glue Ear



  • Ototoxic drugs
  • Head injuries
  • Hazardous levels of noise
  • Sudden hearing loss
  • Diabetes
  • Ageing

There are three types of hearing loss based on the anatomical site of deficit in the ear, which are described here.