Abstract: Objective To investigate the efficacy of semiconductor laser and medium frequency electrotherapy on post-herpes neuralgia (PHN). Methods 95 patients with PHN were divided into treatment group (n=48) and control group (n=47). The control group accepted vitamin B1 and Mecobalamin, and the treatment group accepted semiconductor laser and medium frequency electrotherapy in addition. The efficacy were compared based on the Visual Analogue Scale (VAS) of pain before and after treatment. Results There were 16 patients cured and 20 improved in the treatment group, while 6 cured and 15 improved in the control group (Z=3.393, P=0.001). Conclusion Semiconductor laser and medium frequency electrotherapy is effective on PHN.

Key words: herpes zoster, neuralgia, semiconductor laser, medium frequency electrotherapy