I. Literature reviewSciatic nerve pain (SNP), also called Sciatica, is not a disease but a complex symptom. Sciatica is defined as pain in the passage and distribution region of the sciatic nerve caused by the nerve compression and stimuli that is produced by many different diseases. Traditional Chinese Medicine(TCM) terminology described Sciatica as a kind of Numbness syndrome , thigh and leg pains , Spinal Cord Pain , lower back pain or numbness on one side . Based on TCM theory, the differential diag...