Repetitive motion disorders—also referred to as overuse injuries or repetitive strain injuries—are caused by repeated, prolonged movements of one part of the body. Movements that are rapid and forceful can put a person at risk for these disorders, which most often affect the muscles and tendons in the arms.

Repetitive motion disorders, including carpal tunnel syndrome and tendinitis, often are caused by repetitive movements at work or home. People at risk for these disorders include keyboard users, meat packers, grocery store cashiers, assembly line workers, accountants, musicians, athletes, and workers who use vibrating tools. Activities such as needlework and gardening can contribute to these problems, as well.

Symptoms of repetitive motion disorders develop gradually. They include:

• Pain, aching, and tingling in the affected area
• Reduced movement in the affected area
• Swelling in the affected area