Characteristics and outcomes of young people with a diagnosis of substance induced psychotic disorder

Poster A126, Monday, October 8, 11:30 am - 1:00 pm, Essex Ballroom

Jessica O'Connell1, Monica Sunwoo1, Patrick McGorry2,3, Brian O'Donoghue1,2,3; 1Orygen Youth Health, 35 Poplar rd, Parkville, VIC 3025, 2Orygen, the National Centre of Excellence in Youth Mental Health, Melbourne, Australia, 3Centre for Youth Mental Health, University of Melbourne, Australia

Background: Substance induced psychotic disorders (SIPD) have been historically considered as associated with better clinical and functional outcomes than other psychotic diagnoses and as a result, treatment for those with SIPD are often considerably less intensive. Emerging research is however challenging this premise. The present study aimed to examine differences between those with SIPDs and other first episode psychosis (FEP) diagnoses on demographic, clinical and functional variables. The study also sought to examine rates of diagnostic change from SIPD to other psychotic diagnoses. Methods: Data was collected on all young people who presented with FEP to the Early Psychosis Prevention and Intervention Centre between 01/01/2011 and 31/12/2013. Group differences were analysed with independent samples t-tests and chi-square analyses. Where applicable, odds ratios were calculated. Results: A total of 544 young people presented with a FEP and 10.3% (N=53) were diagnosed with SIPD. Individuals with SIPD were more likely to be male, unemployed, and have a comorbid substance use disorder. There were no significant differences between groups with regards to DUP, severity of psychotic symptoms, time to remission, or rates of relapse. Those with SIPD were less likely to be employed or engaged in study at discharge and 35.7% of those with SIPD had a change of diagnosis to a schizophrenia spectrum or bipolar disorder by service discharge, typically after 18 months. Conclusion: Young people diagnosed with SIPD should be an important focus of early intervention services and receive comparable treatment to those with other psychotic diagnoses.

Topic Area: Substance Use

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