• Headache · Apr 2004

    Randomized Controlled Trial Clinical Trial

    Electroacupuncture for tension-type headache on distal acupoints only: a randomized, controlled, crossover trial.

    • C C L Xue, L Dong, B Polus, R A English, Z Zheng, C Da Costa, C G Li, and D F Story.
    • RMIT Chinese Medicine Research Group, RMIT University, Bundoora, Victoria, Australia.
    • Headache. 2004 Apr 1; 44 (4): 333-41.

    ObjectiveTo investigate the efficacy of electroacupuncture, applied to distal acupoints only, for tension-type headache.BackgroundElectroacupuncture is commonly used for tension-type headache, but when applied to distal acupoints only, evidence of its efficacy is lacking.DesignA randomized, single-blinded, sham-controlled, crossover clinical trial. Methods.-The trial had 5 stages: baseline (2 weeks), phases I and II (each 4 weeks), washout period (2 weeks), and follow-up (3 months after phase II). Forty patients were randomly assigned to either group A or group B. Group A received real electroacupuncture during phase I, then sham electroacupuncture in phase II. Group B received the treatments in reverse order. Outcome measures were headache frequency and duration, pain intensity using a visual analog scale, mechanical pain threshold, headache disability, and sickness impact. Data were analyzed by univariate 2-way analysis of variance.ResultsThirty-seven patients completed the trial. There were no significant differences between the 2 groups at baseline. At the end of phase I, group A, but not group B, demonstrated significant improvement in mean (standard error of the mean [SEM]) headache frequency (3.0 per month [0.3] versus 12.0 per month [1.7]), duration (13.3 hours [3.5] versus 32.0 hours [6.2]), pain intensity (32.8 mm [4.1] versus 47.5 mm [2.7]), pain threshold (right side, 2.9 kg/second [0.1] versus 0.9 kg/second [0.1]; left side, 2.4 kg/second [0.1] versus 1.1 kg/second [0.1]), headache disability score (6.0 [1.0] versus 16.3 [1.6]), and sickness impact score (288.7 [48.0] versus 687.1 [77.2]). For each parameter, significant differences also were demonstrated for both groups between baseline and phase II, and baseline and follow-up. There were no significant differences between the groups at the end of follow-up (P >.05).ConclusionElectroacupuncture to distal points alone is effective for short-term symptomatic relief of tension-type headache.

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