Heated-needle acupuncture for pain

Inclusion criteria: 1. The age ranged from 50 to 80 years; 2. The patients met the diagnostic criteria of Western and Chinese medicine for Parkinson's disease, as well as pain diagnostic criteria; 3. The patients met the characteristics consistent with chronic pain (the pain duration greater than 3 months); 4. The occurrence of pain was associated with the course of Parkinson's disease. The patients with a VAS score of 3 or more ;5.H-Y>4; 6. Currently effective dopaminergic drug therapy for Parkinson's disease in patients with no other treatment available ;7. No language and mental retardation (mini-mental State examination (MMSE)=22), can successfully complete the assessment related scales ;8. Patients who are willing and able to cooperate with treatment. Exclusion criteria: 1.The pain from other causes (e.g., inflammation, definite trauma, tumors, and other related conditions); Or those patients who with primary or secondary chronic pain unrelated to Parkinson's disease, and the pain is non-persistent; 2. The patients has had surgery related to bone and joints; 3.Patients who take more than 1.5g of levodopa per day are not effective in treatment or experience a significant decrease in effect and serious adverse effects due to drug reduction; 4.Patients with secondary Parkinson's syndrome or Parkinsonism-Plus syndrome; 5.H-Y=4; 6.The patient's Cranial MRI suggested a recent intracranial lesion; Patients with serious medical diseases such as heart, liver, kidney, hematopoietic system disorders or malignant tumors, and mental disorders; Patient's inability to take medication on time and cooperate with tests;7. Patients who are participating in other clinical trials.