Randomized controlled trial for acupuncture myofascial pain trigger point in the treatment of primary insomnia

INTERVENTION: Acupuncture group:Acupuncture myofascial trigger point;Placebo needle:Placebo needle; CONDITION: Primary Insomnia PRIMARY OUTCOME: Quality of sleep;Insomnia Severity Index;Self‐Rating Anxiety Scale;Self‐rating depression scale; The short from health survey; INCLUSION CRITERIA: 1. aged between 18 and 65 years; 2. meet the definition of insomnia from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition(DSM‐IV); Text Revision, with Spiegel scale between 8‐21; 3. experienced insomnia for 4 weeks to 2 years before the start of observation period; 4. Patients should read and sign an informed consent.