Post-traumatic amnesia and the nature of post-traumatic stress disorder after mild traumatic brain injury
Abstract
The prevalence and nature of post-traumatic stress disorder (PTSD) following mild traumatic brain injury (MTBI) is controversial because of the apparent paradox of suffering PTSD with impaired memory for the traumatic event. In this study, 1167 survivors of traumatic injury (MTBI: 459, No TBI: 708) were assessed for PTSD symptoms and post-traumatic amnesia during hospitalization, and were subsequently assessed for PTSD 3 months later (N = 920). At the follow-up assessment, 90 (9.4%) patients met criteria for PTSD (MTBI: 50, 11.8%; No-TBI: 40, 7.5%); MTBI patients were more likely to develop PTSD than no-TBI patients, after controlling for injury severity (adjusted odds ratio: 1.86; 95% confidence interval, 1.78–2.94). Longer post-traumatic amnesia was associated with less severe intrusive memories at the acute assessment. These findings indicate that PTSD may be more likely following MTBI, however, longer post-traumatic amnesia appears to be protective against selected re-experiencing symptoms. (JINS, 2009, 15, 862–867.)
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Subsequent TBI studies concurred that trauma memory impairment does not prevent PTSD but is associated with fewer re-experiencing symptoms.
“Subsequent TBI studies specifically assessing trauma memory impairment concurred that it does not prevent PTSD but is associated with fewer re-experiencing symptoms of PTSD (Bryant et al., 2009; Cnossen et al., 2017; Gil, Caspi, Ben-Ari, Koren, & Klein, 2005).”
From Drug-facilitated sexual assault, impaired trauma memory, and implications for mental health treatment (2022) · cites this paper as Bryant et al., 2009
The present findings differ from TBI research findings of fewer re-experiencing symptoms for those absent trauma memory.
“Although the direction of effects is similar, our findings differ from TBI research findings of fewer re-experiencing symptoms for those absent trauma memory (Bryant et al., 2009; Cnossen et al., 2017)”
From Drug-facilitated sexual assault, impaired trauma memory, and implications for mental health treatment (2022) · cites this paper as Bryant et al., 2009
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- Authors
- BRYANT, R. A., CREAMER, M., O’DONNELL, M., SILOVE, D., CLARK, C. R., & MCFARLANE, A. C.
- Affiliations
- UNSW Sydney (AU)
- The University of Melbourne (AU)
- Flinders University (AU)
- The University of Adelaide (AU)
- Corresponding author
- BRYANT, RICHARD A.
- Venue
- Journal of the International Neuropsychological Society
- Publisher
- Cambridge University Press (CUP)
- Published
- 2009-11
- Volume
- 15
- Issue
- 6
- Pages
- 862-867
- ISSN
- 1355-6177 (ISSN-L)
- 1469-7661
- OpenAlex
- W2130911295
- Cited by
- 116
- References
- 4
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 8 · 2021: 3 · 2020: 3 · 2019: 9 · 2018: 8 · 2017: 4 · 2016: 9 · 2015: 11 · 2014: 13 · 2013: 9 · 2012: 10
- FWCI
- 6.07
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the International Neuropsychological Society (publishedVersion)
- PubMed (publishedVersion)
- Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
- Flinders Academic Commons (Flinders University) (submittedVersion)
- Minerva Access (University of Melbourne) (submittedVersion)
- Topics
- Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
- Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Functions and Memory
- Keywords
- post-traumatic stress disorder, mild traumatic brain injury, post-traumatic amnesia, intrusive memories, re-experiencing symptoms, memory impairment, injury severity
- MeSH terms
- Adolescent, Adult, Aged, Amnesia, Analysis of Variance, Brain Injuries, Female, Follow-Up Studies, Health Surveys, Humans, Male, Middle Aged, Statistics as Topic, Stress Disorders, Post-Traumatic, Trauma Severity Indices, Cluster Analysis, Young Adult
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