Cogan's syndrome: auditory and medical management.

Cogan's syndrome is a rare autoimmune disease characterized by the presence of interstitial keratitis and audiovestibular symptoms. The audiovestibular symptoms include fluctuating sensory hearing impairment, tinnitus, vertigo, and reduced vestibular response. Immediate diagnosis and medical intervention provides optimum auditory recovery. Frequent audiologic assessments are necessary to monitor the disease activity and to aid in the therapeutic levels of steroidal medications. Amplification is often required on a temporary or permanent basis. Two case studies are presented to illustrate the audiologist's role in the identification and management of patients with Cogan's syndrome.