See Telecoil.

A reaction where the total is more than the sum of the individual parts. For example, noise and certain drugs have a synergistic effect on hearing loss. Assume that a given amount of noise normally causes 1 unit of hearing loss. Also, assume that a given drug normally causes 2 units of hearing loss. Therefore, […]

A hearing loss that is accompanied by additional physical characteristics such as blindness, physical deformities or mental retardation. It may also involve other organs.

See Otitis externa.

Sound levels loud enough to be heard.

Hearing loss in the inner ear that occurs all at once or within only a few days due to such causes as an explosion, a viral infection or the side effect of some (ototoxic) drugs.