FRIDAY, Dec. 29 (HealthDay News) — Researchers believe they’ve developed an important new tool in understanding rheumatoid arthritis: a genetically altered mouse that closely mimics the disease in humans.

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Dec. 29 (Bloomberg) — U.S. regulators delayed approval of an experimental Nuvo Research Inc. arthritis lotion based on the same method of relieving pain as Merck & Co.’s Vioxx, withdrawn two years ago because of a link to heart attacks and strokes.

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Characterized by chronic synovial tissue inflammation, increasing erosions of cartilage and bone, and eventual destruction of joints, rheumatoid arthritis (RA) is a complex and confounding autoimmune disease.

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(HealthDay News) — Rheumatoid arthritis (RA) can last for a few weeks to months, or it can last a lifetime.

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