The few who were born into signing families tend not to face delays in language development. They consequently also tend to have slow language development. Many are also born into families who did not already know sign language. In the majority of cases, people with prelingual deafness have hearing parents and siblings. This is an inability to fully or partially hear before learning how to utter or understand speech.Īn individual with prelingual deafness was born with a congenital deformity or will have lost hearing during infancy. Hearing loss can affect speech ability depending on when it occurs. Sometimes, surgical intervention may restore hearing, but it is not always effective. Long-term ear infections can damage both the eardrum and the ossicles. This is a combination of conductive and sensorineural hearing loss. Sensorineural total deafness may occur as a result of congenital deformities, inner ear infections, or head trauma. Currently, research is looking into using stem cells to grow new hair cells. Long-term exposure to loud noises, especially high-frequency sounds, is another common reason for hair cell damage. As humans grow older, hair cells lose some of their function, and hearing deteriorates. This kind of hearing loss is normally due to damaged hair cells in the cochlea. Hearing loss is caused by dysfunction of the inner ear, the cochlea, auditory nerve, or brain damage. The ossicles may become impaired as a result of infection, trauma, or fusing together in a condition known as ankylosis. an ear infection with inflammation and fluid buildupĮar infections can leave scar tissue, which might reduce eardrum function.This type can occur for many reasons, including: This means that the vibrations are not passing through from the outer ear to the inner ear, specifically the cochlea. There are three different types of hearing loss: 1) Conductive hearing loss
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