Body Systems Affected By Rheumatoid Arthritis

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Definition

Rheumatoid arthritis (RA) is a long-term disease that leads to inflammation of the joints and surrounding tissues. It can also affect other organs.


Alternative Names

RA; Arthritis - rheumatoid


Causes, incidence, and risk factors

The cause of RA is unknown. It is an autoimmune disease, which means the body's immune system mistakenly attacks healthy tissue.

RA can occur at any age, but is more common in middle age. Women get RA more often than men.

Infection, genes, and hormone changes may be...

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