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Conductive deafness
External ear
Wax (one of the commonest cause), fungus, otitis externa, foreign bodies, polyps, meningitis, stenosis, atresia, tumors.

Middle ear Eustachian tube Causes of sudden sensori–neural deafness Degree of deafness
Deafness can be mild, moderate, severe or the person may be stone deaf.

Diagnosis of early deafness
Severe deafness is easily detected by the patient or his relatives, but it may be difficult to detect mild hearing loss. A patient with very mild deafness or unilateral deafness may not be detected at all, but one should suspect deafness if: Investigations for Deafness