Bacillary angiomatosis following the use of long-term methotrexate therapy: a case report.

Bacillary angiomatosis, a rare and possibly fatal disease, occurs mainly in HIV-infected patients. However, it has been reported in patients with cancer and in recipients of solid organs receiving immunosuppressive drugs such as cyclosporine. This case report describes a 66-year-old man who came to dermatology practice in Clarksburg for an initial visit. He had a longstanding history of psoriasis and psoriatric arthritis treated with methotrexate. A biopsy of a skin lesion on his neck confirmed the diagnosis of bacillary angiomatosis.