group 1 elevated corticosteroids : attack treatment 2 tubes of 10g (4t/d) decreasing treatment : one month: 2 tubes/J (2t/d); 2 months : 2 tubes 1d sur 2 (1d/j); 4 months : 2 tubes 2 fois /week (0,6t/d); 4 months : 2 tubes 1 fois /week (0,3t/d)fois /week (0,3t/d) group 2 low corticosteroids : for paucibullous form with weight < 45kg attack treatment 1 tubes of 10g (1t/d)decreasing treatment 1 month : 1 tube every 2d (0,5t/d; 1 month : 1 tubes 2 fois /week (0,3t/d) 1 month : 1 tubes 1 fois/week (0,15t/d); for paucibullous form with weight > 45kg or for multibullous form with weight < 45kg attack treatment 2 tubes of 10g (2t/d)decreasing treatment 1 month : 2 tubes every 2j (1t/d; 1 month : 2 tubes 2 fois /week (0,6t/d) 1 month : 2 tubes 1 fois /week (0,3t/d)and for multibullous form attack with weigth > 45kg treatment 3 tubes of 10g (3t/d)decreasing treatment 1 month : 3 tubes every 2days (1,5t/d) 1 month : 3 tubes 2 fois /week (1t/j)1 mois : 3 tubes 1 fois /week (0,45t/d)