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Post-traumatic stress disorder (PTSD) can be an acute, chronic or delayed reaction to a traumatic event. Symptoms can include intrusive, disturbing flashbacks or nightmares of the event, accompanied with anxiety and disturbed sleep.
A study on a large cohort of military veterans of European and African ancestries finds no evidence that the APOE ε4 genotype moderates the impact of combat exposure on posttraumatic stress disorder symptom severity and diagnostic status.
Researchers want to unpick how climate change affects mental health around the world — from lives that are disrupted by catastrophic weather to people who are anxious about the future.