MYO refers to muscle and FASCIA refers to the connective tissue that holds us together. Myofacial pain comes from dysfunctional, hypersensitive spots in muscle tissue called trigger points. Trigger point therapy is not to be confused with Chinese acupressure. Trigger point therapy comes from strictly western medical applications and straight anatomy. It is not based on meridians like acupuncture and acupressure.
Trigger points are systematically located near the motor end plates of muscles and have been well mapped. Historically trigger point has been an extremely effective, albeit painful therapy associated with deep tissue.
Myofascial Trigger point was the back pain therapy of choice for JFK while in the White House. I have found that Trigger Point Therapy performed after or in conjunction with a vibracussor and positional release techniques makes for a swifter and far less painful trigger point release.