[Climatic factors and clinical polymorphism of multiple sclerosis]

A study was made of the clinical manifestations of multiple sclerosis (MS) in 106 Russians born in the European part of the USSR, who moved afterwards to Uzbekistan at different times. Analysis of the two patients' groups demonstrated that in those who fell ill in Uzbekistan, MS started at an older age and ran a more malignant course as compared to those who had fallen ill in the European part of the USSR. Therefore, a model has been tried, permitting one to assess the influence of the climatogeographic conditions of the region under study on the clinical polymorphism of MS after exclusion of the populational differences between the examinees.