Study of prevalence of personality disorders in inmate men sample with substance use disorders using of PDQ-4+ self-report

Introduction. The study focused on examining the prevalence of Personality Disorders (PD) in 51 male inmates diagnosed with Substance Use Disorders (SUDs) lifetime within a specialized unit at a prison. Methods. The instruments administered included the Structured Clinical Interview for DSM-IV Axis I and the Personality Diagnostic Questionnaire-4+. Results. The type of crime most frequently committed by the incarcerated was the robbery (76.5%), including robbery with violence. 45.1% of the patients screened positive for Antisocial PD, followed by 35.3% for Paranoid and 23.5% for Obsessive Compulsive PD. The results reflect a male inmate sample exhibiting a clinical profile characterized by SUDs and PD, with almost half of the total sample presenting Antisocial PD. Conclusions. The presence of Antisocial and Paranoid PD with SUD suggests a more complex personality profile, with a tendency to carry out more aggressive crimes, including robbery with violence. A more comprehensive PD assessment should be carried out in prison settings in order to identify dangerous individuals who are at risk of recidivism.