Higgins C, et al. - Treatment-seeking, opioid-dependent patients with and without chronic pain were assessed for psychiatric morbidity. Researchers conducted a retrospective comparative cohort study of all patients of the National Health Service Substance Misuse Service in the East of Scotland (N = 521) who were in treatment during the calendar year 2005 and had been in treatment for varying lengths of time. Chronic pain was reported in 52.7% of patients. At least one psychiatric morbidity was reported in a higher proportion of patients with chronic pain vs no chronic pain (62.4% vs 46.3%). A higher proportion of patients with chronic pain were prescribed anxiolytics (49.0% vs 39.1%) and antimanic drugs (9.9% vs 4.9%) at the study inception. These findings suggested a possibly higher prevalence of psychiatric co-morbidity among patients of opioid treatment services in Scotland who report chronic pain vs those who do not.