Since pain management became a specialty in its own right and following the tremendous breakthroughs made by several pioneer researchers, we have seen major developments in the field and a growing international interest represented at the many national conferences and the World Pain Congress and European Congress. But there is still much to do, as there are still groups under-represented in the research such as children, older adults and people with intellectual and developmental disabilities. Also, we do not have all the answers and pain is an area, where traditional medicine may well be complemented by the field of complementary and alternative therapies. In this book, we have gathered recent papers related to many aspects of pain and pain management and it is our hope that you will all benefit from the wisdom in the many research papers