Sweet syndrome, or acute febrile neutrophilic dermatosis, is a rare inflammatory condition characterized by painful erythematous plaques, fever, and neutrophilia. While it is often associated with malignancy or drug reactions, it may also occur following streptococcal infection. This case highlights the importance of early recognition and treatment of Sweet syndrome secondary to streptococcal pharyngitis.

A 44-year-old female presented with painful erythematous papules and nodules on her extremities, neck, and nape, associated with fever and chills. The lesions started as skin-colored papules that rapidly progressed to painful erythematous plaques. Her medical history included a sore throat two weeks prior. Initial management Clindamycin provided temporary relief, but the lesions persisted. Laboratory work revealed neutrophilic leukocytosis, elevated erythrocyte sedimentation rate (ESR), and an elevated anti-streptolysin O titer. A skin biopsy showed diffuse neutrophilic dermatitis with vasculitis, confirming the diagnosis of Sweet syndrome. Subsequent treatment with oral corticosteroids led to significant clinical improvement over a week.

This case illustrates the importance of considering infectious triggers, such as streptococcal infections, in the diagnosis of Sweet syndrome. Early diagnosis and appropriate treatment with corticosteroids are essential in preventing complications. Reporting this case contributes to the understanding of non-malignant triggers of Sweet syndrome and underscores the need for heightened awareness of this rare condition in patients presenting with acute febrile dermatosis.