What is (are) Rheumatoid Arthritis ?
Rheumatoid arthritis is an inflammatory disease that causes pain, swelling, stiffness, and loss of function in the joints. It can cause mild to severe symptoms. People with rheumatoid arthritis may feel sick, tired, and sometimes feverish. Sometimes rheumatoid arthritis attacks tissue in the skin, lungs, eyes, and blood vessels. The disease generally occurs in a symmetrical pattern. If one knee or hand is involved, usually the other one is, too. It can occur at any age, but often begins between ages 40 and 60. About two to three times as many women as men have rheumatoid arthritis. Learn more about how rheumatoid arthritis occurs.