Dr. Ulrich F. Lanius is a Registered Psychologist in West Vancouver, BC, with a practice in Clinical and Neuropsychology. He has a particular interest in brain-behaviour relationships and the effects of acquired brain injury, as well as trauma and dissociation. He has worked with clients with psychiatric symptoms who have been prescribed opioid antagonists including naltrexone in a variety of doses including low dose naltrexone (LDN) since 1999 and has written multiple book chapters, and on the subject. Dr. Lanius specializes in therapeutic interventions for TBI/MTBI, as well as the treatment of trauma stress syndromes, dissociation and attachment related issues. Dr. Lanius has presented both in North America, as well as internationally, and he has authored a recent book on trauma and dissociation.