AUTHOR=Hay Rebecca E. TITLE=Posttraumatic stress disorder neurophysiology and clinical correlates in pediatric critical care: conceptualizing a PICU-PTSD framework JOURNAL=Frontiers in Pediatrics VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1558302 DOI=10.3389/fped.2025.1558302 ISSN=2296-2360 ABSTRACT=Posttraumatic stress disorder (PTSD) is common in child and parent survivors of critical illness, with significant negative impact on life after survival. Understanding the neuroscience and pathophysiology of contributing factors to PTSD within the pediatric intensive care unit (PICU) context can help identify potentially modifiable risk factors, aid risk stratification, and identify knowledge gaps for further study. This narrative review explores the evidence-based neurophysiology of PICU-PTSD, summarizing predisposing and protective factors related to critical care and conceptualizing the disorder in a biopsychosocial framework.