The mechanism of action of nerve block needle therapy is as follows:

(1) Blocking pain pathways;
(2) Blocking the vicious cycle of pain: Clinically, it has been observed that the analgesic time generated by the application of local anesthetic nerve block is significantly longer than the anesthetic action time of local anesthetic itself; In some patients, pain lasting for several years can be relieved by a single nerve block treatment when a variety of methods have failed. This suggests that local anesthesia is not the only mechanism of action for the treatment of pain. This is thought to be due to nerve block therapy cutting off the vicious cycle of "pain ® muscle tension or small vessel smooth muscle spasm ® pain intensification".
(3) Improve blood circulation: sympathetic block can improve blood flow in the innervated area, thus effectively improving pain caused by poor peripheral blood circulation.
(4) Anti-inflammatory effect: Studies have confirmed that nerve block therapy, especially sympathetic nerve block therapy, has anti-inflammatory effect and thus produces good analgesic effect.