Newly Onset Sinus Bradycardia in the Context of Multiple Sclerosis Relapse

Cardiovascular disorders in acute multiple sclerosis (MS) relapse have been infrequently reported. We present a young multiple sclerosis patient with acute onset of cerebellar symptomatology along with sinus bradycardia. Brain magnetic resonance imaging showed one lesion in the left cerebellar hemisphere which showed postcontrast enhancement and one in the midbrain without postcontrast enhancement. No cardiac pathology was found and symptoms gradually improved after a 5-day course of corticosteroid therapy. It is important to bear in mind the possibility of these rare cardiac symptoms in MS patients, because of their timely recognition and appropriate treatment.