Effects of the electrical stimulation of myofascial trigger points with tension headache.

The effects of electrical stimulation by simple pocket size stimulator were evaluated on myofascial trigger points by pain threshold (PTH) algometry. The study consisted 14 patients with 76 treated trigger points in randomly selected double blind cross-over study protocol. The effects of 30 seconds stimulation increased the PTH values 0.58 kg/cm2 in study group, but only 0.13kg/cm2 in controls (p < 0.01). These results suggested that the stimulation had positive effects on myofascial trigger points, but these effects were seen only on the treated points.