[Description of the case of Cogan syndrome].

Cogan syndrome is a persistent disease with the autoimmunologic background connected with vasculitis. It can be diagnosed by symptoms such as interstitial keratitis, optic nerve dysfunction and nervus acusticus dysfunction with subsequent hearing impairment or deafness. In its course, such systemic symptoms frequently occur: exhaustion, weight loss and joint pain. Due to the rare occurrence of Cogan syndrome and vast obstacles in diagnosing it, the case of34 years old patient with Cogan syndrome is discussed.