Relationship between personality disorders and addiction severity in Iranian male drug users

Regarding the importance of addiction in our societies, this study has been carried out to investigate the relationship between personality disorders and addiction severity. Methods and materials: 248 addicts (135 opiate dependents and 113 stimulant dependents) chosen by convenient sampling method in 2013 were participated in this study. All participants were from patients referred to Addiction Treatment Clinics in Tehran, Iran. Data collecting process was accomplished by means of clinical interview based on DSM-5 criteria for Substance Use Disorders, Iranian version of Addiction Severity Index, and Millon Clinical Multiaxial Inventory – III. Data were analyzed by Pearson correlation using SPSS version 21. There was a significant correlation between cluster A and legal status (p<0.05), cluster B and alcohol use, drug use, legal status, and psychiatric status (p<0.05), and cluster C and alcohol and drug use (p<0.05). Personality disorders in cluster B are stronger predictors for addiction severity and suggests specified treatment requirements in comparison with other groups.