Efficacy of Electroacupuncture Combined With Pregabalin in the Treatment of Trigeminal Herpetic Neuralgia: a Multicenter Randomized Controlled Trial Study Protocol

Participants in the medication group would take 150-mg pregabalin capsules (manufactured by Pfizer Pharmaceuticals Co., Ltd) orally twice daily (total daily dose, 300 mg) for 4 weeks.

Acupoints selection: Ashi acupoint, Sibai acupoint (ST2), Xiaguan acupoint (ST7), and Dicang acupoint (ST4) on the affected side. Acupoints for the diseased branches (all taken from the affected side): eye branch and Tongziliao point (GB1), the maxillary branch is taken from the Quanliao point (SI18), and the mandibular branch is taken from the Jiache point (ST6).Shenting point (DU24), Baihui point (DU20), Hegu point (LI4), Waiguan point (TE5), Yanglingquan point (GB34), and Taichong point (LR3) on the affected side Operation: The EA apparatus will be applied on the Ashi point and (LI4 - TE5). The treatment will last for 30 minutes and the electrical stimulation will be set as 2/100Hz in frequency.

Participants in the EA+Medication group would receive both EA and medical treatement. The acupoints and their location, needles, the settings of the EA device are the same as EA Group's; in the meanwhile, the medication and its dosage is the same as Medication Group's.