or intramuscular stimulation (IMS) is a technique developed by Dr. Chan Gunn. It involves needling of a muscle’s trigger points without injecting any substance. The approach is based on Western anatomical and neurophysiological principles. It should not to be confused with the Traditional Chinese Medicine (TCM) technique of acupuncture. Research has grown to provide evidence-based support in the treatment of acute and chronic back pain, chronic neck pain, tension type and migraine headaches, pelvic girdle pain, knee osteoarthritis, lateral elbow pain and shoulder conditions.