rug-induced hypersensitivity syndrome (DIHS), also known as drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome, is a rare, potentially life-threatening adverse reaction to medication. The diagnosis of DIHS is based on clinical and biochemical findings. It commonly presents clinically with fever, facial swelling, lymphadenopathy, and a morbilliform eruption. 1 Internal organ involvement can include hepatic, renal, pulmonary, hematologic, cardiac, and endocrine abnormalities. 1 Most often, DIHS is caused by anticonvulsants, antibiotics, and allopurinol. 2 With an estimated mortality rate up to 10%, the treatment of DIHS is important. 3 Treatment of DIHS involves withdrawal of treatment with the suspected causative medication, supportive care, and often systemic corticosteroids. In this observational case series, 2 patients referred to the der-matology service of an academic tertiary care hospital and subsequently diagnosed as having DIHS were studied from December 1, 2013, through July 31, 2014. These 2 patients were treated with a short course of cyclosporine followed by a quick resolution of the adverse drug reaction. The findings suggest that cyclosporine is a potential alternative to the traditional long course of systemic corticosteroids in the treatment of DIHS.