Table 1.

Diagnostic criteria for Sweet's syndrome [5].

Major criteria
1.Sudden onset of tender, erythematous plaques or nodules 2.Dense neutrophilic infiltrate in the upper dermis without evidence of leukocytoclastic vasculitis
Minor criteria
1.Fever (38C or higher), arthralgia, or malaise 2.Rapid response to systemic corticosteroids 3.Abnormal laboratory values at presentation (three or more of the following: leukocyte count > 8000; greater than 70% neutrophils; elevated C-reactive protein; erythrocyte sedimentation rate > 20mm/h) 4.Association with underlying malignancy, inflammatory disease, pregnancy; or, preceding infection or vaccination