The Pain Information Network is a resource to better understand pain, why we hurt, and what we can do about it. The latest diagnostic, therapeutic, and research is discussed by experts in the field of pain control strategies and treatment.
http://www.paininformation.com/paininformationpodcast/
episode 8: Understanding Pain Part One
Pain is a subject that is much bespoken, often characterized, poorly presented, and a confusion waiting to happen. It's invisible, and everybody has an opinion. Here's some science.