Substance dependence and chronic pain: experience with treatment and follow-up results.

Fifty patients with chronic pain and substance dependence were admitted to the hospital for treatment of substance dependence. Sixteen patients left treatment prematurely and were noted to have been less flexible in seeking treatment options for relief of pain. Most patients experienced an improved sense of well-being with abstinence, but this was not reflected in pain rating scales. At 1 and 3-4 years follow-up, the group that completed treatment was more outstanding in its commitment to a course of abstinence from drugs and alcohol than the group that had not completed treatment and seemed to experience a greater improvement in overall functioning.