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content:medicine:diseases:r-z:rheumatoid_nodules

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Rheumatoid nodules

Rheumatoid nodules are found in approximately 25% of patients with Rheumatoid Arthritisplugin-autotooltip__plain plugin-autotooltip_bigRheumatoid Arthritis

Rheumatoid Arthritis (RA) is a chronic severe inflammatory disease believed to affect around 1% of the global population. It primarily affects joints,which typically become warm, swollen,and painful. Pain and stiffness often worsen following rest. Most commonly, the wrists and hands are involved, with the same joints typically involved on both sides of the body.
. They often form at inflamed joints (knuckles, elbows etc) and vary in size from 2 mm to 5 cm, They are usually painless.

It's not currently known why they form.

Although the exact process is unknown, there are a few hypotheses for the generation of rheumatoid nodules. It has been observed that rheumatoid nodules frequently form over extensor sites and areas vulnerable to trauma. The trauma causes inflammatory particles to build up and leads to a secondary inflammatory response which ultimately causes fibrin release and necrosis. Another hypothesis suggests that the inflammation of blood vessels activates complement components, which leads to the deposit of rheumatoid factors and fibrin.

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