Seasonal variation of multiple sclerosis exacerbations in North Dakota.
A prospective study of the relationship between exacerbations and season in 336 patients with clinically definite multiple sclerosis showed a significant monthly variation as well as a seasonal pattern of exacerbations. The data obtained are compared with earlier studies that have used varying methodologies. The results continue to support the hypothesis that undefined environmental factors influence the course of multiple sclerosis.
Department of Neurology, University of North Dakota School of Medicine, Fargo.
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Goodkin
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Hertsgaard
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000453:epidemiology / Q000503:physiopathology*; D009658:North Dakota; D011446:Prospective Studies; D012621:Seasons; D013223:Statistics as Topic