Rheumatoid arthritis (RA) is a chronic autoimmune disorder that affects the joints. It is characterized by inflammation of the synovium, the tissue that lines the joints. This inflammation can cause pain, swelling, stiffness, and deformity. RA can also affect other organs in the body, including the skin, eyes, lungs, and heart.

RA is a common disease, affecting about 1% of the population worldwide. It is more common in women than men, and it usually develops between the ages of 40 and 60. The exact cause of RA is unknown, but it is thought to be related to a combination of genetic and environmental factors.

There is no cure for RA, but there are a number of treatments that can help to relieve symptoms and prevent joint damage. These treatments include medications, such as nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, and disease-modifying antirheumatic drugs (DMARDs); physical therapy; and surgery.

Despite the challenges of RA, there is hope for the future. Researchers are working to develop new treatments that can help to slow the progression of the disease and improve the quality of life for people with RA.