[Auditory evoked brain stem potentials in the diagnosis of disseminated demyelinating processes of the central nervous system].

The results of auditory evoked potentials of the brain stem of 109 patients with different clinical form of multiple sclerosis have been analysed. Pathologic findings were classified into five stages. The subclinical lesions at the level of the brain stem were found in 62% of patients in early, monosymptomatic phase of the disease. This method provides a large contribution to early detection of multiple sclerosis.