Abstract
Background: There is evidence suggesting that posttraumatic stress disorder (PTSD) symptom severity and CIU severity are linked and partially mediated by the high-anxious defense mechanism. What is unclear is whether emotional suppression, as a defense serving the opposite purpose for high-anxious defense, can also act as a mediator and whether this mediational effect is partly influenced by time since trauma and trauma type.Aims: To investigate whether emotional suppression mediated the links between PTSD and CIU symptom severities, and PTSD and psychiatric co-morbid symptom severities. It then examined whether the mediating effect would be moderated by how long ago the trauma occurred and trauma type.Methods: One hundred CIU patients were compared with 60 allergy patients. They completed questionnaires measuring PTSD, psychiatric co-morbidity and emotional suppression.Results: Suppressing depression mediated the relationship between PTSD and psychiatric co-morbidity. How long ago the trauma occurred and trauma type moderated the mediational effect of suppressing depression.Conclusions: Following a past trauma, CIU patients may develop PTSD symptoms which influence their psychological well-being through using different levels of emotional suppression, especially suppressing depression. The levels depend on the severity of PTSD symptoms, trauma history and whether they experienced interpersonal traumas.
Published Version
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