As our understanding of the mechanisms of the brain and nervous system that underlie the conscious experience of pain has increased over the past 60 years, so too has the field of pain management. What began as almost exclusively the domain of anaesthetists has become multidisciplinary, and now comprises many other specialisms including neurology, psychology, nursing, occupational therapy and physiotherapy. This spate of activity has been paralleled by a similar growth in research: in neurophysiology, psychology and pharmacology as well as clinical medicine. Simultaneously, the pharmaceutical...