Investigated incidence of types of epilepsy and their etiology, age, and geographical distribution from 6,542 case histories between 1957-1965. Epileptics were 6 per 1.000 of total population, and accounted for 10-12% of neuropsychiatric patients. 75% had grand mal or psychomotor involvement, and were concentrated in the age range 15-35. 25% presented all other clinical forms and were in the range 0-15. Surviving cases in this range fell between 5-15, reflecting severity and poor prognosis. Cases older than 15 were more numerous, revealing the triggering effect of adolescence on latent epilepsies. Genetic predisposition, birth anoxia, and infantile convulsive fevers occurred in this group, which had a good prognosis given the avoidance of alcohol, fatigue, and domestic neglect of treatment. The frequent association of epilepsy with feeble-mindedness and hysteria was due to extended drug treatment in adverse home conditions. The geographic data indicate a predominance of epilepsy in the south of Tunisia, which has been previously reported and related to relative frequency of birth injuries and consanguineous marriages, leading to congenital abnormalities.