[Multiple sclerosis: epidemiological research in the province of Varese].

Epidemiological research has been carried out on multiple sclerosis in the province of Varese. The index of prevalence of the disease at 31-12-1975 was 24.176%. The geomedical figures for the province are reported and a comparison made with similar research carried out in 1966. The clinical aspects of the disease are discussed in relation to a group of patients from other Italian provinces.