What Is Rheumatoid Arthritis?
Rheumatoid arthritis is a chronic disease that causes inflammation of the joints. The inflammation can become so severe that the function and appearance of the hands, as well as other parts of the body, can become affected. In the hand, rheumatoid arthritis may cause deformities in the joints of the fingers, making movement difficult. Lumps, known as rheumatoid nodules, may form over small joints in the hands and the wrist.