4. Rheumatoid Arthritis

Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease involving joints and other organs in the body. It affects about 1.5 million Americans and 1 percent of the population worldwide, causing chronic pain, joint deformity, and significant disability. What Happens in Rheumatoid Arthritis? The disease process of RA is complex and not fully understood, but it […]


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