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Peritraumatic Context and Long-Term Outcomes of Concussion
Emily J Van Etten1,2,3, Arielle R Knight1, Tristan A Colaizzi1
1Translational Research Center for TBI and Stress Disorders, Veterans Affairs Boston Healthcare System, Boston, Massachusetts.
JAMA Network Open
|January 22, 2025
Summary
Mild traumatic brain injury (mTBI) is linked to long-term issues only when it occurs with psychological trauma. This suggests mTBI may scaffold posttraumatic stress disorder (PTSD) symptom development.
Area of Science:
- Neuroscience
- Psychiatry
- Public Health
Background:
- Mild traumatic brain injury (mTBI) and posttraumatic stress disorder (PTSD) are frequently studied together, but their interaction and long-term effects are not well understood.
- Understanding the context of mTBI, specifically whether it occurs alongside psychological trauma, is crucial for determining long-term outcomes.
Purpose of the Study:
- To compare the long-term outcomes of mTBI that occurred in the context of psychological trauma (peritraumatic) versus mTBI that did not (nonperitraumatic).
Main Methods:
- A cohort study of 567 post-9/11 US veterans was conducted using data from the TRACTS study.
- Participants were categorized into three groups: no TBI, nonperitraumatic mTBI, and peritraumatic mTBI.
- Primary outcomes included PTSD severity, postconcussive symptoms, and self-reported disability, analyzed using analyses of covariance.
Main Results:
- Veterans with peritraumatic mTBI exhibited significantly greater PTSD severity, postconcussive symptoms, and disability compared to those with nonperitraumatic mTBI or no TBI.
- No significant differences in outcome measures were found between the nonperitraumatic mTBI and no TBI groups.
- The study included 183 individuals with no TBI, 189 with nonperitraumatic mTBI, and 195 with peritraumatic mTBI.
Conclusions:
- mTBI is associated with long-term consequences only when it co-occurs with exposure to a traumatic event.
- A novel hypothesis suggests mTBI may scaffold the formation of PTSD symptoms, potentially leading to chronic postconcussive symptoms and disability.
- These findings highlight the importance of considering the context of trauma when assessing mTBI outcomes.
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