Physicians Dr Travell and Simons defined a myofascial trigger point as a “Hyperirritable spot in a skeletal muscle.” The spot is painful on compression and can give rise to characteristic referred pain, referred tenderness, motor dysfunction and autonomic phenomena.
Myofascial trigger points (MTrPs) are commonly seen in both acute and chronic pain conditions. Hendler and Kozikowski cite Myofascial trigger points as the most commonly missed diagnosis in chronic pain patients.
Over the years it has been shown that it is possible to deactivate TrPs by injecting them with a large number of disparate substances (Lu & Needham 1980) The only reasonable inference drawn from this is that the pain relief obtained is not dependent on the specific properties that the substance may contain but rather on the stimulation of the needle used for the injection itself.
One of the first physicians to employ Dry Needling extensively for this purpose was Dr Karel Lewit of Czechoslovakia . Lewit (19