Short-term treatment with lymphocytoplasmapheresis was evaluated in 6 multiple sclerosis patients with special reference to the electrophysiological and immunological findings. Visual, somatosensory, brainstem auditory evoked potentials, flicker fusion test, helper/suppressor blood lymphocyte ratio, serum immunocomplexes and immunoglobulins and Kurtzke scores were evaluated in each patient before and after treatment. No statistically significant results were obtained.