The symptom clusters that currently make up part of the diagnostic criteria for PTSD in the fifth edition of the DSM (DSM-5) are intrusive, avoidance, alterations in cognitions and mood, and alterations in arousal and reactivity. This represents some changes in terminology from the fourth edition of the manual (DSM-IV) as well as the addition of new clusters. SYMPTOM CLUSTERS OF PTSD ■ intrusive symptoms ■ avoidance symptoms ■ negative alterations in cognitions and mood ■ marked alterations in arousal
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