Readers have access to legions of books dealing with the molecular, genetic, neurochemical, neurophysiological, neuroanatomical, neuroradiological and psychological aspects of pain as well as with the clinical approaches to pain from various medical disciplines. Why then is it necessary to publish a book on the pathophysiologyofpain perception? Pain can result either from noxious events due to lesions, injuries, diseases, etc., or from disturbances in the system transducing, transforming, and processing the potential pain signal or from an interaction of both. Under certain pathological...