Rheumatoid arthritis is a chronic inflammatory disorder that can affect more than just your joints. In some people, the condition can damage a wide variety of body systems, including the skin, eyes, lungs, heart and blood vessels.An autoimmune disorder, rheumatoid arthritis occurs when your immune system mistakenly attacks your own body's tissues.The inflammation associated with rheumatoid arthritis is what can damage other parts of the body as well.
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