Screening and early treatment of deafness regardless of age is essential. Deafness leads to social isolation, depression, and decreased cognitive function. The diagnosis requires an otoscopy and a confirmation of the type and degree of deafness by audiometry. Sudden deafness and meningitis are neuro-sensorial emergencies. Deafness may be the mode of disclosure of an autoimmune disease or part of the evolutionary profile. Hearing complaints with a normal classical audiogram may be the manifestation of a so-called "hidden" hearing loss and must be explored more carefully.
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