Practical use of immunosuppressive drugs in autoimmune rheumatic diseases.

Immunosuppressive drugs are frequently used in the treatment of autoimmune rheumatic diseases when more conventional therapy, including corticosteroids, fail to control the manifestations of disease. The practical use of these drugs in rheumatoid arthritis, systemic lupus erythematosus, and vasculitis (including Wegener's granulomatosis and Sjögren's syndrome) are reviewed. The focus is on the indications for the administration of these agents and proper monitoring of their effect on disease activity.