Neomycin ototoxicity.

A case of oral neomycin ototoxicity is presented, followed by a summary of known cases in the English literature. While it is known that neomycin is concentrated in the inner ear fluids, at the present time the biochemical basis of its ototoxic effect has not been definitively elucidated. High frequency audiometry can aid in the early detection of the onset of neomycin-induced deafness. Dialysis has a limited but useful role in preventing neomycin ototoxicity.