Tinnitus

Tinnitus refers to "ringing in the ears" when no other sound is present. Tinnitus can sound like hissing, roaring, pulsing, whooshing, chirping, whistling, or clicking. It can occur in one ear or both ears and is a common problem.

Read on:

American Speech-Language and Hearing Association (ASHA) - http://www.asha.org/public/hearing/Tinnitus/

American Tinnitus Association - http://www.ata.org/