Following Dr. Paul Nogier's discoveries of Auricular Therapy, many have practiced, taught and researched the phenomena associated with this acupuncture microsystem. Since then, in the United States and much of the world, the familiarity with the simple Chinese ear acupuncture charts and ignorance of the advanced works of Nogier have led many to practice simple forms of Auricular Therapy that lack the sophistication inherent in Nogier's system. You will learn throughout this text of the critical implications that have led Nogier and his colleagues to far advance the correspondence system beyond the simple "inverted fetus". Although most of the world approaches Auricular Therapy from a simplistic single-phase model, understanding the advanced Phases 2 and 3 are critical to improving patient response, especially in chronic, inflammatory and degenerative conditions. Further, understanding the concepts of advanced Auricular Therapy enables the clinician to enhance his/her understanding of the patient's pathophysiology and thus to approach the patient as a true clinician rather than as simply a technician. Drs. Bryan L. Frank and Nader E. Soliman have been highly regarded for their teaching and logical, systematic approach to Auricular Therapy and their text has been long anticipated. Fortunately, the wait is over!