This publication provides in-depth information about pain and its causes. In addition to discussing a number of common pain syndromes--including back pain, central pain syndrome, complex regional pain syndrome, and headache--the brochure offers an overview of how pain is diagnosed and provides an alphabetized listing of common forms of treatment. The publication also explores the effects of gender, aging, anatomy, and other factors in those with painful conditions. A list of sources of additional information is included as well.