Posttraumatic amnesia and recall of a traumatic event following traumatic brain injury |
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Authors: | Feinstein Anthony Hershkop Susan Ouchterlony Donna Jardine Alison McCullagh Scott |
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Institution: | Department of Psychiatry, Sunnybrook and Women's College Health Science Centre, Toronto, Ontario, Canada. ant.feinstein@utoronto.ca |
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Abstract: | The relationship between posttraumatic amnesia (PTA) and symptoms of posttraumatic stress disorder (PTSD) was examined in 282 outpatients at a mean of 53 days after traumatic brain injury (TBI). Patients were assessed for TBI severity, intrusive and avoidant PTSD-type symptoms, and psychological distress, and were stratified into four comparison groups by duration of PTA. Levels of PTSD-type symptoms and psychological distress did not differ significantly between groups. Even patients with PTA >1 week reported intrusive and avoidant PTSD-type symptoms. However, when patients were stratified into those with PTA of <1 hour or >1 hour, the former were more likely to report such symptoms. TBI patients with brief PTA are more likely to experience PTSD-type reactions, but severe TBI with prolonged PTA is not incompatible with such reactions in a subset of patients. Possible mechanisms that could account for this finding are discussed. |
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