@article{ref1,
title="The short-term dynamics of posttraumatic stress disorder symptoms during the acute posttrauma period",
journal="Depression and anxiety",
year="2019",
author="Price, Matthew and Legrand, Alison C. and Brier, Zoe M. F. and Gratton, Jennifer and Skalka, Christian",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="BACKGROUND: The manner in which posttraumatic stress disorder (PTSD) develops remains largely unknown. PTSD is comprised of 20 symptoms across 4 clusters. These clusters were hypothesized to reflect a failure of recovery model in which intrusive symptoms appear first. Intrusive symptoms led to avoidance of trauma-related stimuli, which resulted in sustained arousal. The sustained arousal ultimately led to dysphoria. <br><br>METHODS: This hypothesized symptom progression was evaluated during the acute posttrauma period (the first 30 days postevent). Participants (N = 80) reported their PTSD symptoms for 30 days via mobile devices. Using a short-term dynamic modeling framework, a temporal and contemporaneous model of PTSD symptoms was obtained. <br><br>RESULTS: In the temporal network, a fear-conditioning component was identified that supported the hypothesized set of relations among symptom clusters. The contemporaneous network was classified by two subnetworks. The first corresponded to a fear-conditioning model that included symptoms of intrusions and avoidance. The second included symptoms of dysphoria and arousal. <br><br>CONCLUSIONS: These findings suggest that, after a trauma, there may be a fear-conditioning process that involves intrusions, avoidance, and arousal symptoms. Dysphoric symptoms were also present but developed as a partially distinct component.<br><br>© 2019 Wiley Periodicals, Inc.<p /> <p>Language: en</p>",
language="en",
issn="1091-4269",
doi="10.1002/da.22976",
url="http://dx.doi.org/10.1002/da.22976"
}