The main symptom of deQuervain’s Tendonitis is pain at the thumb side of the wrist. You may also feel pain in your forearm. The pain can occur suddenly or gradually and will usually become worse when you use your thumb and wrist to perform grasping and pinching motions. If the nerve that lies on top of the tendon sheath is irritated, it can cause the back of your thumb and index finger to feel numb.
DeQuervain’s Tendonitis can also cause swelling at the wrist and thumb area. You may develop a fluid-filled cyst in this area. You may hear crackling noises or feel a catch when you move your thumb. Sometimes people have difficulty moving their thumb and wrist.
