Dr. Eric Ruderman shares his medical knowledge and describes rheumatoid arthritis.
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Rheumatoid arthritis is an inflammatory arthritis that involves many joints in the body typically in a symmetrical fashion. We think about it as an auto-immune disease. It’s a disease in which your own immune system is sort of revved up as if its fighting off something war and that causes an inflammation that can hit the joints as well as other tissues in the body.

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