Cutaneous and pulmonary Nocardiosis in a patient with Pemphigus

Pemphigus is a chronic blistering mucocutaneous disease, classified in immunobullous skin diseases. Infections, particularly septicemia due to Staphylococcus aureus and Pseudomonas aeroginosa are the most common and dangerous disorders due to immunosuppressive therapy in this disease. Infection with nocardia is rare, so that only 6 cases have been reported yet. Herein, we report a 56-year-old man with one-year history of pemphigus treated with prednisolone and cyclophosphamide, who at the same time developed skin and pulmonary nocardiosis. He had a good response to treatment with cotrimoxazole.