Disease-modifying antirheumatic drugs (DMARDs) are a class of medications used primarily to treat autoimmune diseases, such as rheumatoid arthritis. They work by slowing down the progression of the disease and reducing inflammation, which helps prevent joint damage and improves overall function. DMARDs can be divided into two main categories: traditional DMARDs, like methotrexate, and biologic DMARDs, which are derived from living cells. These medications often take several weeks to show effects, but they are essential for managing chronic conditions and improving the quality of life for patients.