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|Title||The relationship between substance use and posttraumatic stress disorder in a methadone maintenance treatment program.|
|Author(s)||Villagonzalo KA, Dodd S, Ng F, Mihaly S, Langbein A, Berk M.|
|Journal, Volume, Issue||Compr Psychiatry. 2011 Sep-Oct;52(5):562-6.|
|Major outcome(s)||Cannabis may be used to self-treat posttraumatic stress disorder (PTSD)|
INTRODUCTION AND AIMS: Posttraumatic stress disorder (PTSD) is frequently linked with substance abuse. The self-medication hypothesis suggests that some people may use illicit substances in an attempt to self-treat psychiatric symptoms. This study explores the relationship between substance abuse and PTSD symptom clusters in a methadone maintenance population. DESIGN AND METHODS: Clients of a methadone maintenance program at a public Drug and Alcohol Service were invited to complete the PTSD Checklist-Civilian Version, a screening tool for PTSD. Information about their history of substance use was also collected. RESULTS: Eighty clients (43 female, 37 male), aged 35 ± 8.0 years (mean ± SD), participated in the study, of which 52.7% screened positive for PTSD. Severity of marijuana use was significantly associated with a number of reexperiencing and hyperarousal symptoms and with overall severity of PTSD symptoms. Opiate, amphetamine, and benzodiazepine use did not appear to be related to PTSD symptoms. DISCUSSION AND CONCLUSIONS: In this sample, marijuana may be used to self-treat certain PTSD symptoms, supporting the self-medication hypothesis. Further research is required to confirm the association between a diagnosis of PTSD and substance use. Given the high prevalence of PTSD in the substance-using population, routine PTSD screening in the substance abuse treatment setting may be justified.
|Participants||80 clients of a methadone maintenance program|
|Type of publication||Medical journal|
|Address of author(s)||Department of Clinical and Biomedical Sciences, University of Melbourne, PO Box 281, Geelong, Victoria 3220, Australia; Mental Health and Drug and Alcohol Services, Barwon Health, PO Box 281, Geelong, Victoria 3220, Australia.|