Vasculitis occurs in approximately one in 100 people with rheumatoid arthritis. The most commonly involved blood vessels are arteries that carry blood to the skin, nerves, and internal organs.
When the small vessels that supply blood to the skin on the fingertips and around the nails are involved, the result can be small pits on the fingertips or small sores or redness around the nail. Involvement of larger blood vessels can cause a painful rash, often on the legs. In serious cases, ulcers can form with the risk of infection.
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