Rheumatoid Arthritis Basics: Overview, Symptoms, and Causes
https://www.niams.nih.gov/health-topics/rheumatoid-arthritis/basics/symptoms-causes
WEBDec 11, 2023 · What is rheumatoid arthritis? Rheumatoid arthritis (RA) is a chronic (long-lasting) disease that mostly affects joints, such as the wrist, hands, feet, spine, knees, and jaw. In joints, RA causes inflammation that leads to: …
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