Sensori neural Deafness

Sensori neural Deafness

Deafness due to disease of the inner ear, hearing nerve or brain centres

Anatomy and Physiology of the Ear Click here

Sensorineural Hearing Loss: Develops when the auditory nerve or hair cells in the inner ear are damaged. The source may be located in the inner ear, the nerve from the inner ear to the brain, or in the brain. Sensorineural hearing loss, commonly referred to as “nerve deafness,” frequently occurs as a result of the aging process in the form of presbycusis, which is a gradual loss occurring in both ears. Tumors such as acoustic neuromas can lead to sensorineural hearing losses, as can viral infections, Meniere’s disease and meningitis. Sensorineural hearing loss can also be the result of repeated, continuous loud noise exposure, certain toxic medications, or as an inherited condition. Generally, it is non-reversible. Scientists have, however, made great progress in uncovering the genes responsible for a number of forms of congenital hearing impairments/ deafness, and this genetic research may in time lead to therapies for some congenital causes of hearing loss.

Sensorineural hearing loss may be further differentiated as sensory or neural. Sensory hearing loss refers to loss caused by abnormalities in the cochlea, such as by damage from noise trauma, viral infection, drug toxicity, or Meniere’s disease. Neural loss stems from problems in the auditory (eighth cranial) nerve, such as tumors or neurologic disorders. While tumors in this nerve may be life threatening, they are also often curable.

Causes

 

 

 

 

 

 

 

 

 

 

 

Audiogram and Impedance test results of a patient with Sensori Neural Deafness

Hearing Aids – Treatment of  Sensori-Neural (“Nerve deafness”)  and Click

The hope for  Deafness due to ageing

An initial hearing loss manifests when people begin to notice a reduction in their hearing ability.

1. It becomes difficult to understand what is being said, when three or more people are talking together.

2. It seems that others – especially young people – have begun to mumble.

3. Background noise can make it difficult to understand what is being said.

4. Other sounds, such as bird song, doorbells or a ringing telephone, can recede or simply disappear.

5. Family and friends of people who have a hearing loss, due to advancing age, also notice this