Trigger point therapy
Regarded by many as one of the most important aspects of treatment for chronic soft tissue pain and dysfunction trigger point therapy emphasizes the importance of "myofascial trigger points." Defined as a "hyperirritable spot in skeletal muscle that is associated with a hypersensitive palpable nodule in a taut band." In laymen's terms it is a very small area within a muscle that is very sensitive to touch.
Some techniques you may have heard of that are parts or pieces of the overall picture of trigger point therapy.
Trigger point injections