American Pain Society ABOUT: The American Pain Society (APS) is a multidisciplinary educational and scientific organization dedicated to serving people in pain. The society was founded in 1978 as a national chapter of the International Association for the Study of Pain (IASP), and now includes more than 3,200 physicians, nurses, psychologists, dentists, scientists, pharmacologists, therapists and social workers who research and treat pain and advocate for patients with pain. Texas Pain Society ABOUT: The Texas Pain Society was established in 1990 and the membership of 110 is mostly comprised of anesthesiologists specializing in chronic pain management. However, it is constantly striving to expand its membership base by attracting physicians specializing in neurology, physical medicine, neurosurgery, psychiatry and orthopaedics. It also has an associate membership category which allows nurses and other non-physicians to join. International Association for the Study of Pain ABOUT: IASP is an international, multidisciplinary, non-profit professional association dedicated to furthering research on pain and improving the care of patients with pain. Membership in IASP is open to scientists, physicians, dentists, psychologists, nurses, physical therapists, and other health professionals actively engaged in pain research and to those who have special interest in the diagnosis and treatment of pain. Currently IASP has 6300 individual members from 86 countries.