Chronic opioid therapy in nonmalignant pain.

This review draws on data obtained in the cancer pain, nonmalignant pain, and addict populations to examine critically the major issues raised by the use of chronic opioid therapy in nonmalignant pain. The available evidence suggests that there is probably a selected subpopulation of patients with chronic nonmalignant pain who may obtain sustained partial analgesia without the development of toxicity or the psychologic and behavioral characteristics of addiction. Future discussions of this approach must adequately define the terminology of addiction and strive to distinguish medical considerations from the societal and regulatory influences that may affect prescribing behavior. Those who treat patients with chronic pain must actively participate in these discussions lest decisions with enormous impact on patient care be made solely by those whose primary responsibility is the elimination of substance abuse.