hyperacusis

[ hī′pər-ə-kōōsĭs, -kyōō- ]

n.

Abnormally acute hearing due to heightened irritability of the sensory neural mechanism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.