Abstract
We examined physical and social states of 128 juvenile onset cases out of 1672 SMON. The on-set age of under ten years were eight patients, ages eleven to twenty were fifty one, and twenty one to twenty five were sixty nine. There were no significant difference in the clinical picture between those patients with juvenile onset and those with adult onset. However, high ratio of spasticity and low ratio of severe disablity of locomotion were seen in juvenile onset groups. And, those patients of onset age under ten years have a tendency of severe physical states, i.e., visual disorder and dis-abled locomotion activity. Although juvenile onset SMON have adapted to their disabilities without unsatisfied feeling for the life, high ratio of unmarried person seems to cause some problem in socio-welfare in future.
