Dr. Gary D. Klasser obtained his dental degree from the University of Manitoba (Canada) in 1980. Over the next 22 years, he enjoyed the practice of general dentistry from both a public health and private practice perspective until he returned to graduate studies in 2002. In 2004, he completed his training and graduated from the University of Kentucky with a Certificate in Orofacial Pain. In 2005, he completed a fellowship in Oral Medicine/Oral Oncology at the University of Illinois at Chicago (UIC). From 2005 – 2011, he was an Assistant Professor and Director of the Oral Medicine/Orofacial Pain clinic at the College of Dentistry in the University of Illinois at Chicago. He is currently a Professor in the Department of Diagnostic Sciences at Louisiana State University, School of Dentistry and is involved in clinical research and teaching. Dr. Klasser has published in a number of peer reviewed journals and has contributed chapters to various textbooks while serving as an editorial reviewer for a number journals. He is also co-editor of the 5th edition of the American Academy of Orofacial Pain book entitled: Orofacial Pain: Guidelines for Assessment, Diagnosis, and Management.Learning Objectives:1. Describe the new terminology proposed by the International Headache Classification for neuropathic pain conditions affecting the orofacial pain region.2. Summarize the different management options available for persistent facial idiopathic pain (PFIP) or painful post-traumatic trigeminal neuropathy (PTTN)3. Explain the prognosis of persistent facial idiopathic pain (PFIP) or painful post-traumatic trigeminal neuropathy (PTTN)