Table 2.

Major and minor diagnostic criteria for Sweet syndrome.

Criteria	Findings
Major	1. Abrupt onset of painful erythematous plaques or nodules
	2. Histopathological evidence of a dense neutrophilic infiltrate without evidence of leukocytoclastic vasculitis
Minor	1. Pyrexia, >38°C
	2. Association with an underlying hematological or visceral malignancy, inflammatory disease, or pregnancy; or preceded by an upper-respiratory or gastrointestinal inflection or vaccination
	3. Excellent response to treatment with systemic corticosteroids or potassium iodide
	4. Abnormal laboratory values at presentation (three or four): *Erythrocyte sedimentation rate (ESR) > 20 mm/h *White blood cell count (WBC) > 8×109/L *Neutrophil count > 70% *High C-reactive protein (CRP) levels