A second case of Sweet's syndrome occurred in a male; it is the 20th to appear in the literature. Tender, red plaques in centrifugal distribution appeared in association with fever, leukocytosis, and an elevated erythrocyte sedimentation rate. The process represents an inflammatory vascular reaction pattern of unknown etiology with pathologic changes occurring mainly in the upper and mid dermis. Erythema elevatum diutinum is to be considered in the differential diagnosis. Lesions respond to corticosteriod therapy.
Goldman GC, Moschella SL. Acute Febrile Neutrophilic Dermatosis (Sweet's Syndrome). Arch Dermatol. 1971;103(6):654-660. doi:10.1001/archderm.1971.04000180080011