How does tendonitis occur?
During ordinary activity, part of a tendon may stretch or become injured. Under normal circumstances, your body will fix the injured tendon. However, if you overwork a tendon faster than the body can fix it, or if you work it to the point where it becomes damaged or inflamed, tendonitis may develop. When tendonitis develops, your tendons become swollen, and may become painful to move a particular joint or muscle. Tendonitis is a common problem that often develops in the wrist, arm and/or shoulder as a result of doing repetitive tasks such as typing, playing tennis, gardening or pursuing hobbies like building models.
