The distribution of Psychosis, ICD-11 PTSD and Complex PTSD symptoms among a trauma-exposed UK general population sample

Frost, Rachel; Louison Vang, Maria; Karatzias, Thanos; Hyland, Philip; Shevlin, Mark

Abstract

Background: Co-occurrence of psychosis and posttraumatic stress disorder (PTSD) symptoms has been demonstrated, but the ICD-11 marks a significant divergence in the formulation of PTSD with a focus on the core symptoms and the addition of Complex PTSD (CPTSD).
Objective: To evaluate the distribution of psychosis and traumatic stress symptoms using the ICD-11 conceptualisation of PTSD and CPTSD.
Method: A latent class analysis was conducted on psychosis symptoms, PTSD and CPTSD among a random adult sample from the UK general population with a history of traumatic events (N = 1,051).
Results: Six classes were identified; a low-symptom class, a PTSD-class, a CPTSD-class, a class characterized by disturbances s in self-organization alone as well as two classes characterized by CPTSD and various levels of psychosis symptom endorsement. Cumulative childhood trauma predicted membership of the PTSD, CPTSD and comorbid classes in a dose-response manner with the strongest effects observed for classes characterised by comorbid symptoms.
Conclusion: The present study confirms the co-occurrence of psychosis symptoms and ICD-11 PTSD and CPTSD. Psychosis symptoms did not emerge in isolation from traumatic stress symptoms, underpinning the need for a greater recognition of psychosis symptoms as part of the broader clinical picture among trauma-exposed populations.

Citation

Frost, R., Louison Vang, M., Karatzias, T., Hyland, P., & Shevlin, M. (2019). The distribution of Psychosis, ICD-11 PTSD and Complex PTSD symptoms among a trauma-exposed UK general population sample. Psychosis, 11(3), 187-198. https://doi.org/10.1080/17522439.2019.1626472

• Journal Article Type: Article
• Acceptance Date: May 29, 2019
• Online Publication Date: Jun 25, 2019
• Publication Date: Jun 25, 2019
• Deposit Date: May 31, 2019
• Publicly Available Date: Jun 26, 2020
• Journal: Psychosis
• Print ISSN: 1752-2439
• Electronic ISSN: 1752-2447
• Publisher: Routledge
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 3
• Pages: 187-198
• DOI: https://doi.org/10.1080/17522439.2019.1626472
• Keywords: PTSD, Complex PTSD; childhood trauma.
• Public URL: http://researchrepository.napier.ac.uk/Output/1841241
• Contract Date: May 31, 2019