Definition: Hearing loss or deafness that, along with other characteristics, is inherited or passed down through generations of a family.
By Jamie Berke, About.com
Updated: December 01, 2008
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Are your symptoms merely irritating, or could they be a sign of allergies? More >
The best way to treat a headache is to prevent it. Learn how. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.