Carpal tunnel syndrome, also known as median nerve entrapment, occurs when swelling or irritation of the tendons in the carpal tunnel results in pressure on the median nerve causing pain in the palm side of the wrist and pain and tingling in the fingers. The median nerve controls sensations to the palm side of the thumb and fingers, as well as impulses to some small muscles in the hand that allow the fingers and thumb to move.

Symptoms usually start gradually, with frequent burning, tingling, or numbness in the palm of the hand and the fingers, especially the index, middle and ring fingers. Pain can sometimes travel up the arm and affect the shoulder. The symptoms often first appear during the night. As symptoms worsen, people might feel pain, weakness, or numbness in the hand and wrist, radiating up the arm during the day. Decreased grip strength may make it difficult to form a fist, grasp small objects, or perform other manual tasks. If not properly treated, CTS can cause irreversible nerve damage and permanent deterioration of muscle tissue.

From an Oriental medicine perspective, carpal tunnel syndrome is seen as a disruption of the flow of Qi and Blood (Xue) within the area and associated with cold, dampness or wind penetrating the muscles and sinews. Acupuncture points, stretching exercises, herbal remedies and nutritional supplements are chosen to treat accordingly.

In addition to reducing the swelling, inflammation and pain, acupuncture addresses any headaches, neck pain, shoulder stiffness and sleeping problems that often accompany this condition.

According to a randomized, controlled study published in the May 2009 issue of the Clinical Journal of Pain, acupuncture is as effective as the corticosteroid, prednisone, for the treatment of carpal tunnel syndrome (CTS).