deafness
deafness Partial or total hearing loss. Conductive deafness, faulty transmission of sound to the sensory organs, is usually due to infection or inherited abnormalities of the middle ear. Perceptive deafness may be hereditary or due to injury or disease of the cochlea, auditory nerve or hearing centres in the brain. Treatment ranges from removal of impacted wax to delicate microsurgery. Hearing aids, sign language, and lip-reading are techniques which help deaf people to communicate.
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deafness
