Frost, Rachel and Vang, Maria Louison and Karatzias, Thanos and Hyland, Philip and Shevlin, Mark (2019) The distribution of psychosis, ICD-11 PTSD and complex PTSD symptoms among a trauma-exposed UK general population sample. Psychosis, 11 (3). pp. 187-198. ISSN 1752-2447

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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 in self-organization alone as well as two classes characterized by CPTSD and various levels of psychosis symptom endorsement. Cumulative childhood adversity 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.

Item Type:	Article
Additional Information:	Cite as: Rachel Frost, Maria Louison Vang, Thanos Karatzias, Philip Hyland & Mark Shevlin (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, DOI: 10.1080/17522439.2019.1626472
Keywords:	Complex PTSD; PTSD; psychosis; childhood trauma;
Academic Unit:	Faculty of Science and Engineering > Psychology
Item ID:	14102
Identification Number:	https://doi.org/10.1080/17522439.2019.1626472
Depositing User:	Philip Hyland
Date Deposited:	01 Mar 2021 14:45
Journal or Publication Title:	Psychosis
Publisher:	Taylor & Francis (Routledge)
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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