Tendonitis

Tendonitis an inflammation of a tendon. Repeated tensing of a tendon can cause inflammation. Eventually, the fibres of the tendon start separating, and can even break, leaving behind debris which induces more friction, more swelling and more pain. "Sub-acute" tendonitis is more common, which entails a dull ache over the wrist and forearm, some tenderness, and it gets worse with repetitive activity.