This book examines the issue of pain in individuals with intellectual disabilities by introducing the topic as well as suggesting a model for pain in this population. A couple of articles suggest different approaches to the complex subject of evaluation in this group of clients, and also in depth approaches to specific syndromes. In this yearbook for 2009, you will find research published from the Journal of Pain Management by leading researchers from all over the world, which produces sound and evidence-based research that can help mankind to suffer less and enjoy a good quality of life.