Arthritis is a common condition that causes pain and inflammation to the joints and the tissue surrounding the joints. Arthritis is characterized by swelling, pain, stiffness, and decreased range of motion. Arthritis affects over 50 million adults in the United States.
Most cases of arthritis can be caused by wear and tear, natural aging, or may develop after an injury. However, lupus arthritis and rheumatoid arthritis are autoimmune disorders.
The most common type of arthritis is osteoarthritis, the result of wear and tear through aging. Age is not always the factor, as overuse can also cause arthritis. For example, professional athletes may develop arthritis-related symptoms earlier than someone who works a sedentary job.