The Causes of Hearing Loss

The ear is a very complex organ comprising three parts: the outer ear, the middle ear and the inner ear.  From the inner ear the auditory nerve transmits information to the brain for processing.

Hearing loss can result from an obstruction or damage in any of these three parts.  Hearing loss resulting from a problem located in the outer or middle ear is called a conductive hearing loss.  A hearing loss caused by a damaged inner ear is called sensorineural.  Should the loss be the result of a combination of these, this is known as mixed hearing loss.

Causes of hearing loss in the outer ear

Typical problems include excessive accumulation of earwax and infection of the auditory canal, such as 'swimmer's ear'.

Causes of hearing loss in the middle ear

Perforation of the eardrum, infection or fluid in the middle ear, glue ear and otosclerosis (a calcification around the stapes limiting its ability to move) are the most common causes.  Many outer and middle ear problems can be treated successfully with medication or surgery.  Should this not be the case, remaining hearing loss can usually be helped to a considerable degree by using hearing aids.

Causes of hearing loss in the inner ear

The majority of hearing problems result from damaged inner ear structures.  Typical causes are the natural aging process, excessive exposure to noise, medication that is toxic to the auditory system and head injuries.  In such cases the tiny hair cells in the cochlea are damaged, obstructing the transfer of sound signals to the brain.  As a rule, this damage cannot be reversed medically but the adverse effects can be overcome to a larger degree, with hearing aids.

In order to gain a better understanding of hearing loss, click here to see how the ear functions.

Book an appointment with Clarity Hearing to have your ears examined