which cells are attacked in rheumatoid arthritis
Introduction. Rheumatoid arthritis (RA) is a chronic disease in which various joints in the body are inflamed, leading to swelling, pain, stiffness, and the possible loss of function. Rheumatoid arthritis is an autoimmune disease in which the body's immune system attacks joints and other tissues.The pattern of joints affected is usually symmetrical, involves the hands and other joints, and is worse in the morning.heumatoid arthritis (RA) is a chronic disease in which various joints in the body are inflamed, leading to swelling, pain, stiffness, and the possible loss of function.