Rheumatoid arthritis (RA) is a long-lasting autoimmune disorder that primarily affects joints. It typically results in warm, swollen, and painful joints. Most commonly, the wrist and hands are involved, with the same joints typically involved on both sides of the body. The disease may also affect other parts of the body. While the cause of rheumatoid arthritis is not clear, it is believed to involve a combination of genetic and environmental factors. The underlying mechanism involves the body’s immune system attacking the joints. There is no cure for RA, but treatments can improve symptoms and slow the progress of the disease. Disease-modifying treatment has the best results when it is started early and aggressively. The goals of treatment are to minimize symptoms such as pain and swelling, to prevent bone deformity and to maintain day-to-day functioning.

In the present book, twelve typical literatures about rheumatoid arthritis drugs published on international authoritative journals were selected to introduce the worldwide newest progress, which contains reviews or original researches on medical science, genetics, epidemiology, virology, etc. We hope this book can demonstrate advances in rheumatoid arthritis drugs as well as give references to the researchers, students and other related people.