Some examples are:
About 1.3 million people are affected by Rheumatoid Arthritis. It is an autoimmune disease which primarily affects the lining of the joint (synovium) resulting in pain, stiffness, swelling and joint damage. Typical joints affected are hands and feet, but other joints can be affected too in a symmetrical pattern. The disease can affect other parts of the body including the lining of the heart, lung and the eye.