EBM News
EBM News

Types, Causes, Symptoms of Hearing Loss

World Deaf Day is observed every year on last Sunday of the month of September. So, this year World Deaf Day 2019 will be observed on 29 September. Drawing attention towards the achievements of the deaf people as well as deaf people community, the day aims to promote understanding among common people about the problems of deaf people.

On this World Deaf Day, let us examine what hearing loss is.

Hearing loss is the condition when you are unable to hear sounds partially or completely, in one or both of your ears. It usually develops gradually, with time and surveys point out that about 25 per cent of people between the age of 65 and 74 experience hearing loss [1] .

Hearing loss is also termed as decreased hearing, deafness, loss of hearing and conductive hearing loss. Types Of Hearing Loss According to the American Speech-Language-Hearing Association (ASHA), there are three types of hearing loss. Each type is caused by different factors and the classifications are conductive hearing loss, sensorineural hearing loss (SNHL), and mixed hearing loss [2] [3] .

Conductive hearing loss: This occurs when the sounds fail to travel from the outer ear to the eardrum and the bones of the middle ear. Conductive hearing loss makes it difficult for you to hear soft or muffled sounds but the condition is not permanent in every case. Sensorineural hearing loss (SNHL):

This type of hearing loss develops when there is damage to inner ear structures or in the nerve pathways to the brain. SNHL is permanent and an individual with this type of hearing loss can find it difficult to hear distinct, normal or loud sounds. Mixed hearing loss: This happens when both conductive hearing loss and SNHL occurs at the same time.