Skin infections and particularly necrotizing fasciitis (NF) represent a rare but serious complication after transplantation. Optimal management depends on prompt diagnosis with identification of the causative organisms to allow appropriate antibiotic therapy in association with surgical debridement. We report a case of a methicillin-resistant Staphylococcus aureus (MRSA) NF as the single pathogen in a renal transplant recipient, during the course of a de novo minimal-change nephrotic syndrome, treated with high-dose steroids. Antibiotic therapy together with surgical debridement and discontinuation of immunosuppressive treatment led to a complete recovery, despite persistence of the nephrotic syndrome. The development of de novo minimal-change nephrotic syndrome after renal allograft transplantation should alert physicians to the possibility of MRSA NF during an increase in the immunosuppressive regimen.