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Rheumatoid arthritis is a chronic (long-lasting) inflammatory disease that causes pain, stiffness, warmth, redness and swelling in joints. Over time, the affected joints may become misshapen, misaligned and damaged.
The specific cause of rheumatoid arthritis has yet to be identified despite decades of medical research. While we donât know specifically what causes rheumatoid arthritis, we do know that it is the result of an autoimmune disorder. An autoimmune disorder occurs when immune cells begin to attack the body. In the case of rheumatoid arthritis, the body attacks its own healthy joint tissue called the synovium. The synovium is what produces a clear liquid substance known as synovial fluid. This fluid lubricates healthy joints and gives cartilage and bones the nourishment required to remain effective and mobile.