Rheumatoid arthritis (RA) is a chronic inflammatory disease that causes pain, stiffness, and swelling in the joints. It is characterized by symmetrical inflammation of multiple joints. RA affects around 1-3% of the population worldwide and is three times more common in women than men. While the cause is unknown, genetics and environmental factors are thought to play a role. Treatment involves medications like DMARDs and biologics to reduce inflammation and prevent joint damage, with the goals of relieving pain, controlling disease activity, and improving function. Poor prognostic factors include persistent active disease, early or late age of onset, high rheumatoid factor levels, and presence of rheumatoid nodules or systemic symptoms.