A Comparison of the Therapeutic Effect Between Head-point Acupuncture and Conventional Body Acupuncture on Insomnia

The investigators will conduct a single-center, and randomized controlled cases study. A total of 120 participants with insomnia will be enrolled, and randomly assigned into two groups, 60 of them are the head-acupoints acupuncture group, who will receive GV20, EX-HN-1, GV21, GV22, GV23, GV24, GV29, and bilateral GB13 head-acupoints acupuncture treatment, and 60 of them are the body-acupoints acupuncture group, who will receive bilateral HT7, PC6, SP6, ST36, KI3, LR3 body-acupoints acupuncture treatment for 4 weeks. The primary outcomes of therapeutic effect on insomnia are changes of the Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), and the Hospital Anxiety and Depression Scale (HADS).The time frame of the three primary outcomes are: baseline week 0, week 2, week 4 and week 6. The secondary outcomes of therapeutic effect on insomnia are sleep parameters including sleep efficiency (SE), sleep awakenings (SA) and total sleep time (TST) recorded by the actigraphy (time frame: baseline week 0, week 2, week 4 and week 6), as well as the heart rate viability(HRV) recorded by the ECG monitor (time frame: baseline week 0, week1, week 2, week 3, week 4 and week 6; and 30 minutes before and 60 minutes after acupuncture through study completion).