 A myofascial trigger point consists of multiple, hyperirritable contraction knots related to the production and maintenance of the pain cycle; essentially, myofascial trigger points will generate much local pain upon stimulation or irritation.Deep dry needling for treating trigger points was first introduced by Czech physician Karel Lewit in 1979.Lewit had noticed that the success of injections into trigger points in relieving pain was apparently unconnected to the analgesic used.