“…P carinii pneumonia has been reported in association with methotrexate treatment in persons with RA (21,28,32-37), psoriatic arthritis (22), asthma (26), and malignancies treated with chemotherapy and/or transplantation (46). Other infections reported in RA patients receiving methotrexate include cryptococcosis (38), nocardiosis (23,24,27), herpes zoster (25,33), Listeria meningitis (28), herpes simplex hepatitis (29), cytomegalovirus pneumonia (30), and disseminated histoplasmosis (24).…”