LYCOS RETRIEVER 
Rheumatoid Arthritis: Occurs
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In one in five cases, rheumatoid arthritis develops very rapidly but more often the symptoms develop over several months. For about one in 20 people with the disease the cycles of inflammation cause severe damage in many joints, but others have little or no damage. Treating inflammation as quickly as possible is vital because once joint damage has occurred it can't be reversed.
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Small lumps, called rheumatoid nodules, may form under your skin at pressure points, and can occur at your elbows, hands, feet and Achilles tendons. Rheumatoid nodules may ... occur elsewhere, including the back of your scalp, over your knee or even in your lungs. These nodules can range in size รข€” from as small as a pea to as large as a walnut. Usually these lumps aren't painful.
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Skin: Subcutaneous nodules (rheumatoid nodules) occur in many patients with RA whose RF value is abnormal. They are often present over pressure points (eg, olecranon). Vasculitic lesions of the skin may manifest as palpable purpura or skin ulceration.
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