Abstract: We collected retrospectively clinical informations about a large series of 86 patients up to 16y of age, from 4 countries: Turquey (43), France (22), Saudi Arabia (11). Iran (10). All cases were first reviewed then 53 of them were selected according to the criteria of the International study group for BD. Statistical analysis: X2 square test and two tailed Fisher exact test. Descriptive data: males 45, females 41, sex ratio ...