Causes may include biomechanical problems, pre-existing injury to any area in the arm, sporting technique, inadequate equipment and progressing too quickly with an exercise programme. Onset of pain in damaged tendons can be gradual or immediate. Bending and extending the wrist is often painful and there may be local swelling plus creaking at the injury site.
Local pain is felt and wrist mobility is often reduced whether in a bent or extended position.
Leaning onto the hand may be painful.