Characteristics, course and outcome of substance-induced psychosis in first-episode psychosis

There are high rates of co-occurring substance use disorders among individuals with first-episode psychosis (FEP). Difficulties differentiating substance-induced from primary psychotic disorders complicates the accurate diagnosis and treatment of these individuals. The recent development of the Psychiatric Research Interview for DSM-IV Substance and Mental disorders (PRISM) has made the reliable differentiation of these disorders possible. However, little is known about rates of substance-induced psychosis (SIP) among FEP populations or its characteristics, course and outcome. This project aims to explore the demographic, clinical and substance use characteristics and 12-month outcomes of SIP versus primary psychotic disorders with concurrent substance use in FEP. The study is currently recruiting participants.