Rheumatoid arthritis - Wikipedia, the free encyclopediaAlthough the cause of rheumatoid arthritis is unknown, autoimmunity plays a pivotal role in both its chronicity and progression, ...Rheumatoid Arthritis Symptoms, Causes, Treatment - What causes ...Rheumatoid arthritis is an autoimmune disease that causes chronic joint inflammation. Read about RA symptoms, treatment, diet, and medications.Rheumatoid arthritis - PubMed Health - National Center for ...This guide can help you work with your doctor or nurse to find a medicine for rheumatoid arthritis (RA). It is a ... arthritis (a condition that causes ...