[Geographic distribution of multiple sclerosis and comparison with geophysical values]

This work is based on former investigations describing the similarity between the distribution of MS-frequency and solar particle rays. The analysis of the prevalence values shows clearly that the global MS-frequency is closer related to the geomagnetic than to the geographic latitude. This relation is best described by a Gaussian curve: in temperate latitudes the MS-frequency increases rapidly in pole direction and decreases again in pole-proximity. The MS-distribution shows a spatial relation to the distribution of solar particle rays and geomagnetic activity and to the external radiation belt of the earth. Further considerations are being made including the 11-year-sun-cycle.