As a branch of medicine science, pain management refers to the practice and study of improving the quality of life for people suffering from chronic pain. The primary treatment of pain includes drugs such as analgesics, anticonvulsants, etc. Other common treatment methods include physical therapy and rehabilitation such as acupuncture, transcutaneous electrical nerve simulation, etc. This book elucidates the concepts and innovative models around prospective developments with respect to pain management. It discusses in detail all the theories and concepts used under this area. It is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of pain management.