Rheumatoid arthritis (RA) is an autoimmune disorder which affects the joints, and causes pain and stiffness. These symptoms typically worsen after rest. Generally, the joints of the cervical spine, hands and feet are affected. However, larger joints may also be involved. Over time, polyarthritis sets in, and as the disease progresses, the inflammatory activity of the body causes tendon erosion and tethering, and leads to the destruction of the joint surface. This leads to deformity and limits the range of movement. RA can also cause inflammation around the lungs and the heart, and low red blood cell count. People with RA are susceptible to atherosclerosis, myocardial infarction, stroke and lung fibrosis. The diagnosis is made on the basis of the presenting signs and symptoms, laboratory testing and X-ray results. There is no known strategy to prevent the disease from occurring or treat the condition when it has set in. Treatments are designed to slow disease progression and control symptoms, such as pain and swelling. This book aims to shed light on some of the unexplored aspects of rheumatoid arthritis and the recent researches in this condition. It provides comprehensive insights into the study of rheumatoid arthritis. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.