The koranic schools are in poor socio-economical conditions in Dakar and skin 
diseases are common in these conditions. The goal of our descriptive study was 
to determine the prevalence of skin diseases occurring in these situations. One 
hundred five boys from four koranic schools of Dakar were examined. Eighty 
percent of the examined boys were with unless one skin disease. Tinea capitis 
(42.66%), scabiosis (13.33%), pyoderma (15.33%), plantar keratodermia (100%) 
were the skin diseases. In 34.52% these skin disease were associated and 
antecedents of skin infections diseases were reported in 89.5% of boys. Atopic 
dermatitis was in 2.38% cases, keloid in 1.19%. The other frequent diseases were 
abdominal parasitosis (71.42%), umbilical hernia (6.66%). All skin diseases were 
improved only in 50% of cases after two months of treatment. Tinea capitis was 
cured in 4 months after treatment. The high prevalence and the chronicity of the 
skin disease were due to poor socio-economical conditions.