You searched for: “acupuncture analgesia
acupuncture analgesia (noun)
Analgesia (feeling no pain or very little pain) produced by the insertion of acupunture needles at certain acupuncture points on the body.

This activates small myelinated nerve fibers in the muscles which transmit impulses to the spinal cord and then activate three centers: the spinal cord, midbrain, and pituitary/hypothalamus in order to produce analgesia or no pain.