Medical mystery: Leg weakness led to bigger issue

The first time A.B. came to my office in 2003, she was in her late 40s, suffering from swollen and painful joints. After blood tests, she was diagnosed with rheumatoid arthritis. Unlike the more common “wear and tear” osteoarthritis, rheumatoid arthritis is a chronic disorder in which the immune system turns on the body, gradually destroying tissue in and around the joints.

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