... may help improve the symptoms of POTS. Key words: Multiple sclerosis, Postural tachycardia syndrome, syncope, dizziness, fatigue. Introduction Multiple sclerosis (MS) is a chronic demyelinat-ing ... of cardiovascular dysautonomia in multiple sclerosis. Acta Neurol Scand 1996;93:241–245. 3. Linden D, Diehl RR, Berlit P. Subclinical autonomic dis-turbances in multiple sclerosis. J Neurol 1995;242:374– ... dysfunction in multiple scle-rosis is likely related to brainstem lesions. J Neurol Sci 1993;120: 82–86. 5. Acevedo AR,Nava C, Arriada N, Violante A, Corona T. Car-diovascular dysfunction in multiple...