Repetitive stress injury is a medical condition that results from repeated motions or activities that cause damage to the muscles, tendons, or nerves. Some common synonyms for this condition include repetitive strain injury, overuse injury, occupational overuse syndrome, and cumulative trauma disorder. These terms all refer to the same type of injury and are often used interchangeably in medical and scientific literature. Repetitive stress injuries can affect anyone who performs repetitive tasks, from assembly line workers to musicians, athletes, and computer users. Symptoms may include pain, weakness, numbness, and tingling, and treatment may involve rest, physical therapy, and pain management techniques.