Arthritis affects one in every seven Americans. It affects people of all ages. It most often begins when a person gets older but it may occur at most any age.
Arthritis causes pain, stiffness, and swelling in or around joints.
These symptoms can develop suddenly or slowly. Only a healthcare provider can tell if such symptoms are truly arthritis. The cause for most forms of arthritis is unknown, although we are learning more. People who are overweight have a higher chance of developing arthritis. Excess weight increases the risk for developing arthritis in the back and knees.