This month's edition of Psychiatric Annals, guest edited by Yuval Neria, PhD, presents a comprehensive view of posttraumatic stress disorder (PTSD) from epidemiology to genetics, brain circuitry, and treatment. PTSD is distinct from most psychiatric disorders in that its characteristic symptom complex occurs secondarily to a specific class of environmental event(s). Although as is shown in these articles, a number of vulnerabilities do predispose someone to the development of the syndrome, but a triggering experience is still involved in its genesis. As we also learn, the incidence of exposure to a traumatic experience is much greater than the incidence of PTSD.
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