Corticosteroids have a firm place in the treatment of ms, but as yet no generally accepted regimen of this therapy exists. It is not known either, how to achieve the greatest effectiveness of these drugs and avoid side effects. Many clinicians advocate high intravenous doses of methylprednisolone in a short time of 5-7 days. This method is more effective and leads to less adverse effects. The studied patients received prednisone (Encorton Polfa) in short course of 3 days every month. The dose of Encorton in each course depended on the clinical condition but never exceeded 200 mg. The regimen was used in 18 patients who were followed up at least one year. Evident improvement or stabilization was obtained in 11 cases. No adverse effects were noted. These results are comparable to those achieved with methylprednisolone. It may be supposed that every regimen of corticoid treatment in ms is usefull if it causes no adverse effects. The treatment by method of long-term pulse therapy with corticoids is applicable in outpatients.