Rheumatoid arthritis Rheumatoid arthritis (RA) is a chronic, progressive, and disabling autoimmune disease. It causes inflammation, swelling, and pain in and around the joints and can affect other body organs. Rheumatoid arthritis (RA) is a chronic, progressive, and disabling autoimmune disease. It causes inflammation, swelling, and pain in and around the joints and can affect … Continue reading Rheumatoid arthritis