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Otosclerosis is a condition in which there is an overgrowth of bone
in the space behind the eardrum (middle ear) and in the inner ear. Symptoms
include tinnitus (such as ringing in the ears), dizziness, and some hearing
loss, with severe hearing loss (deafness) developing as the middle and inner
ear become less functional.
The cause of otosclerosis is unknown, although it may be
hereditary. Hearing loss from otosclerosis is usually noticed between the ages
of 11 and 30. Women have otosclerosis twice as often as men. The condition may
get worse during pregnancy.
Hearing loss caused by otosclerosis may sometimes be improved by
Current as of:
April 8, 2013
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Charles M. Myer, III, MD - Otolaryngology
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