Multiple sclerosis and neuromyelitis optica. Case report and speculation
Cosnett, J.E.
South African Medical Journal 60(6): 249-251
1981
ISSN/ISBN: 0256-9574 PMID: 7256475 Document Number: 175591
Among the indigenous people of tropical and subtropical countries neuromyelitis optica is more common than multiple sclerosis (MS), which is exceptionally rare. Alternatively, one might conclude that when MS does occur in these countries it usually assumes the spinal-optic form. The evidence on which these statements are based is reviewed, and 6 cases from Natal are presented. These observations could have a bearing on the pathogenesis and epidemiology of MS.