Rheumatoid arthritis (RA) is an autoimmune disorder, a dysfunction of the immune system. The purpose of a healthy immune system is to protect the body from infection. For those diagnosed with rheumatoid arthritis, the immune system becomes overactive and attacks the joints, specifically the synovial lining of affected joints, causing pain and stiffness.The exact causes of rheumatoid arthritis are still not clear, but the condition has been studied extensively. Research shows that genetic and environmental conditions trigger the disease. Not everyone with the genetic predisposition for RA will develop the condition. There are current theories that suggest a virus, trauma or infection triggers the onset of the condition in a percentage of those who are genetically susceptible. Unfortunately, those who develop rheumatoid arthritis may end up with health problems that extend beyond painfully damaged joints.
