Sweet's syndrome is an uncommon benign skin disorder, whose pathogenesis remains
unknown. Its classic form is more common in women and presents itself as
papular-nodular, painful and erythematous or violaceous lesions. It mainly
affects the face, neck, and upper limbs. Fever and neutrophilic leukocytosis are
also common features. Although it is considered a systemic disease marker in
more than half of patients, the association of this condition with Crohn's
disease is rare, with few cases reported in the literature, of which, none in
Brazil. We report the case of a patient with Crohn's disease who developed the
classical features of Sweet's syndrome.