This books explains the neuroanatomy and function of the trigeminal system. With a clear understanding of normal function, the clinician can begin to understand and manage dysfunction. It elaborates on classification of the various orofacial pain disorders and describes the history and examination procedures that can be used to differentiate each disorder. This diagnostic process is the most important aspect of orofacial pain management. It is hoped that this sequence of information will allow the reader to improve his or her skills in the complicated field of orofacial pain.