Posttraumatic stress and social anxiety: the interaction of traumatic events and interpersonal fears

Abstract

Posttraumatic stress disorder (PTSD) and social anxiety disorder (SAD) are frequently comorbid among veteran and community samples. Several studies have demonstrated significant comorbidity between trauma, PTSD, and social anxiety (SA), and a growing number of studies have explored the nature of this association. Although a diagnosis of either PTSD or SAD alone can result in significant impairment in social and occupational functioning, these difficulties are often magnified in persons suffering from both disorders. This review describes the current state-of-the-art regarding the co-occurrence of trauma, PTSD, and SA. First, we provide an overview of empirical data on the prevalence of co-occurring trauma, PTSD, and SAD. Second, we describe possible explanatory models of the co-occurrence, with a specific focus on the shared vulnerability model. Third, we review the available empirical data addressing the postulates of this model, including both genetic and psychological vulnerabilities. Fourth, we describe additional factors-guilt, shame, and depressive symptoms-that may help to explain the co-occurrence of PTSD and SA. A better understanding of this complex relationship will improve the efficacy of treatment for individuals suffering from both disorders. We conclude with key areas for future research.

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