Rheumatoid Arthritis

The Rheumatoid Arthritis topic includes research on the causes, diagnosis, prevention, and treatment of rheumatoid arthritis, a disease that causes pain, swelling, stiffness, and loss of function in joints.

Rheumatoid arthritis is a chronic autoimmune disease. It occurs when the immune system, which normally helps protect the body from infection and disease, attacks its own tissues. Rheumatoid arthritis causes are unknown. A combination of factors may lead to the disease including genes, environment, and sex hormones.