Section 2 of 9
Major criteria
B. Vais, K. Serror, B. Pulvermacker, E. Zakine, J-D. Bouaziz, M. Chaouat, and D. Boccara · about 1 minutes
1.Sudden onset of painful erythematous plaques or nodules.2.Histologic evidence of a dense infiltrate of mature neutrophils in the dermis, without true leukocytoclastic vasculitis.