Rheumatoid arthritis (RA) is a chronic inflammatory disease that causes pain, swelling, and stiffness in the joints. It typically affects the hands, feet, and wrists symmetrically. The inflammation and swelling can eventually cause permanent damage to cartilage and bone within joints. RA is treated through a combination of lifestyle changes, medications like NSAIDs, DMARDs, and TNF-α blockers to reduce joint damage and inflammation. Left untreated, RA can lead to long-term joint deformity and disability.