Image Notes: Joint affected by rheumatoid arthritis.
Rheumatoid arthritis (RA) is traditionally considered a chronic, inflammatory autoimmune disorder that causes the immune system to attack the joints. It is a disabling and painful inflammatory condition, which can lead to substantial loss of mobility due to pain and joint destruction. RA is a systemic disease, often affecting extra-articular tissues throughout the body including the skin, blood vessels, heart, lungs, and muscles. About 60% of RA patients are unable to work 10 years after the onset of their disease.
The name is derived from the Greek. Rheumatos means "flowing", and this initially gave rise to the term 'rheumatic fever', an illness that can follow throat infections and which includes joint pain. The suffix -oid means "resembling", i.e. resembling rheumatic fever. Arthr means "joint" and the suffix -itis, a "condition involving inflammation". Thus rheumatoid arthritis was a form of joint inflammation that resembled rheumatic fever. Rheumatoid arthritis appears to have been described in paintings more than a century before the first detailed medical description of the condition in 1800 by Landre-Beauvais.
Text and images are licensed under the GNU Free Documentation License. Material is used from the Wikipedia article "Rheumatoid Arthritis".
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