Acupuncture for Patients With Chronic Tension-type Headache

Two hundred and eighteen patients with chronic tension-type headache(CTTH) will be randomly assigned to an experimental group (acupuncture) and a control group (superficial acupuncture) in a 1:1 ratio. Participants in both groups will receive 20 sessions of acupuncture over 8 weeks, and the same acupoints will be selected in acupuncture treatments.The study cycle will last 36 weeks, including a 4-week baseline period, a 8-week treatment period and a 24-week follow-up period. And the primary outcome will be measured at the end of 16th week. While, the secondary outcomes will be measured at the baseline, the 4th, 8th,12th,16th,20th,24th,28th and 32nd week after randomization.After each treatment, participants will finish the Massachusetts General Hospital (MGH) Acupuncture Sensation Scale (MASS) to evaluate deqi sensations.