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During the recent mobilization the neuropsychiatric officers examined approximately 3,500,000 men, draftees and volunteers. The examinations were made at the camps, and in the case of draftees, after acceptance by draft boards.
A total of 69,394 cases of nervous and mental disease and defects were identified. They were divided into nine clinical groups. The subhead under which multiple sclerosis was classified was entitled "Organic Diseases and Injuries." It included injuries, the general organic diseases of the nervous system, syphilis of the central nervous system (exclusive of paresis), a few minor conditions, such as tics, myasthenias, myotonias and other conditions. This group embraced 6,916 cases, about one-tenth of the total number.
Our method of approach to a determination of the frequency of multiple sclerosis is to determine its frequency, not in relation to the number of men examined, but in relation to other nervous conditions found in the particular group to