Rheumatoid arthritis is a chronic autoimmune disease that primarily affects the joints, causing inflammation and often leading to joint pain, stiffness, and swelling. It occurs when the body's immune system mistakenly attacks its own healthy tissues, particularly the lining of the joints. This inflammatory condition can progressively cause damage to the bones, cartilage, tendons, and ligaments, eventually leading to joint deformities and functional impairment. Rheumatoid arthritis typically affects multiple joints symmetrically, most commonly in the hands, wrists, and feet. However, it can also involve other organs like the skin, eyes, and lungs. The exact cause of this condition is unknown, but factors such as genetics, environmental influences, and hormonal changes are believed to play a role in its development. Treatment options for rheumatoid arthritis aim to reduce inflammation, relieve pain, prevent joint damage, and improve overall quality of life.