Comorbidity Guidelines Webinar- Substance-related psychosis: what to ask and what to do

Posted Wednesday 23 July 2025 | The Matilda Centre for Research in Mental Health and Substance Use

This webinar will give an overview of substance-related psychosis and is part of the University of Sydney’s Matilda Centre for Research in Mental Health and Substance Use Comorbidity Project webinar series, which is focused on applying evidence into practice.

This webinar will be presented by Associate Professor Julia Lappin.

Associate Professor Julia Lappin is an Associate Professor at UNSW School of Psychiatry and the National Drug and Alcohol Research Centre. She is a Consultant Psychiatrist at Prince of Wales Hospital, Sydney. She led the development of the NSW Tertiary Referral Service for Psychosis, a state-wide service for NSW and served as its inaugural Clinical Director for five years. She currently runs implementation projects of interventions which improve quality of life in people with mental health disorders. Julia has a broad range of interests across research and clinical practice, with a focus on improving outcomes in mental health disorders, particularly mental health harms related to substance misuse.

By the end of this webinar, attendees will be able to:

• To understand the relationship between psychotic experiences and substance use, particularly cannabis and methamphetamine
• To detail the evidence for what works in treating co-morbid psychosis and substance use
• To know what to ask when assessing risk factors for the development of psychotic symptoms and enduring psychotic illness.