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 Sudden Deafness  
Sudden Deafness
Introduction 3

Sudden Deafness
Introduction 3

Description : The pathologic changes observed in the temporal bones of patients who have experienced a sudden sensorineural hearing loss are compatible with a viral labyrinthitis. The most consistent pathologic change is atrophy of the organ of Corti, the tectorial membrane. Degenerative changes in the stria vascularis occur in about 50% of cases.

Other causes of sudden deafness include trauma, congenital syphilis, measles, meningitis, otitis media, leukemia, a spontaneous rupture of the round window membrane, thrombosis of the anteroinferior cerebellar artery, and a spontaneous hemorrhage into the perilymphatic spaces.

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