Electro-thumbtack Needle Therapy for Chronic Neck Pain

Inclusion Criteria: 1. Diagnosed with neck pain with headaches or neck pain with movement coordination impairments according to the Orthopaedic Section of the American Physical Therapy Association (APTA); 2. Aaged 18-65 years; 3. History of neck pain for at least 3 months; 4. A score of ≥4 in Numerical Rating Scale for neck pain (NRS-NP) assessing the average neck pain intensity over last 7 days until the day of recruitment. Exclusion Criteria: 1. Diagnosed with neck pain with mobility deficits or neck pain with radiating pain according to the Orthopaedic Section, APTA; 2. Known specific reason leading to neck pain such as tumor, immune disease, endocrine and metabolic disorders, neurological abnormalities, cervical vertebra fracture, cervical dislocation; 3. Acute neck pain or neck pain with radiating pain or upper limb symptoms; 4. Neck pain with sensory or motor disturbance; 5. Prior cervical spine surgery or congenital abnormalities; 6. Experiencing medical dispute litigation; 7. Have received acupuncture in last 30 days; 8. In need of analgesic, muscle relaxant, hormones, or bearing greater pain from another area; 9. Allergic to metal or adhesive tape, or carrying cardiac pacemaker, or skin damaged at selected acupoints; 10. Disable to communicate or critically ill; 11. Drug or alcohol dependent; 12. Currently or planning to be pregnant.