Rev Neurol France
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Multiple sclerosis (MS) affects nearly 40 000 patients in France. Many factors are mixed up in the development of MS. Epidemiologic studies demonstrate the importance of environmental factors and some possible epidemics of MS in Faroe Islands and Iceland. ⋯ Scan and of nuclear magnetic resonance are discussed. Main therapeutic trends are emphasized. The underlying ethic problem of the choice of a therapy is discussed.