| Summary points: | A 27-year-old with MS and using interferon beta-1a presents in acute crisis during which he experienced blurred vision and, for the first time, hearing difficulties in the right ear. This case report describes the clinical presentation, results of the brainstem auditory evoked potentials test (BAEP) , and includes various tables and figures. The authors discuss the importance of the BAEP test at first diagnosis of MS for later comparison. |