Acupressure (a blend of "acupuncture" and "pressure") is a traditional Chinese medicine (TCM) technique derived from acupuncture. In acupressure physical pressure is applied to acupuncture points by the hand, elbow, or with various devices. Reviews of acupressure clinical trials have been conducted by the Cochrane Collaboration and Bandolier according to the protocols of evidence-based medicine; for most conditions they have concluded a lack of effectiveness or lack of well-conducted clinical trials.

Traditional Chinese medicine's acupuncture theory predates use of the scientific method, and has received various criticisms based on scientific thinking. There is no known anatomical or histological basis for the existence of acupuncture points or meridians.Felix Mann: "...acupuncture points are no more real than the black spots that a drunkard sees in front of his eyes." (Mann F. Reinventing Acupuncture: A New Concept of Ancient Medicine. Butterworth Heinemann, London, 1996,14.) Quoted by Matthew Bauer in Chinese Medicine Times, Vol 1 Issue 4 - Aug 2006, "The Final Days of Traditional Beliefs? - Part One" Acupuncturists tend to perceive TCM concepts in functional rather than structural terms, i.e. as being useful in guiding evaluation and care of patients. "Despite considerable efforts to understand the anatomy and physiology of the "acupuncture points", the definition and characterization of these points remains controversial. Even more elusive is the basis of some of the key traditional Eastern medical concepts such as the circulation of Qi, the meridian system, and the five phases theory, which are difficult to reconcile with contemporary biomedical information but continue to play an important role in the evaluation of patients and the formulation of treatment in acupuncture." Acupuncture. National Institutes of Health: Consensus Development Conference Statement, November 3-5, 1997. Available online at consensus.nih.gov/1997/1997Acupuncture107html.htm. Retrieved 30 January 2007. Neuroimaging research suggests that certain acupuncture points have distinct effects that are not otherwise predictable anatomically.

Background

Acupoints used in treatment may or may not be in the same area of the body as the targeted symptom. The TCM theory for the selection of such points and their effectiveness is that they work by stimulating the meridian system to bring about relief by rebalancing yin, yang and qi (also spelled "chi"). This theory is based on the paradigm of TCM, not that of science.