Sweet syndrome

A sudden, painful eruption that developed in a 50-year-old female who was febrile and had general malaise. There are multiple very edematous and erythematous papules and plaques, most of which appear vesicular or bullous on initial examination, but are firm with palpation (pseudovesiculation). However, the confluent lesions in the lower part of the picture are indeed bullous and here there is also exudation and crusting. Systems review in this patient revealed myelocytic leukemia.