Acute febrile neutrophilic dermatosis (Sweet's syndrome). Four case reports.

Four patients with unusual features of acute febrile neutrophilic dermatosis (Sweet's syndrome) are reported. This syndrome is more common than is apparent from the small number of case reports. It has well-defined clinical and histological criteria, but may be considered within the erythema multiforme spectrum of reaction patterns. The clinical presentation and course can vary, as illustrated by these 4 case reports.