title: The trauma of first episode psychosis: the role of cognitive mediation.
abstract: OBJECTIVE
  First episode psychosis can be a distressing and traumatic event which has been linked to comorbid symptomatology, including anxiety, depression and PTSD symptoms (intrusions, avoidance, etc.). However, the link between events surrounding a first episode psychosis (i.e. police involvement, admission, use of Mental Health Act, etc.) and PTSD symptoms remains unproven. In the PTSD literature, attention has now turned to the patient's appraisal of the traumatic event as a key mediator. In this study we aim to evaluate the diagnostic status of first episode psychosis as a PTSD-triggering event and to determine the extent to which cognitive factors such as appraisals and coping mechanisms can mediate the expression of PTSD (traumatic) symptomatology.
  
  
  METHODS
  Approximately 1.5 years after their first episode of psychosis, patients were assessed for traumatic symptoms, conformity to DSM-IV criteria for posttraumatic stress disorder (PTSD), and their appraisals of the traumatic events and coping strategies. Psychotic symptomatology was also measured.
  
  
  RESULTS
  31% of the sample of 35 patients who agreed to participate reported symptoms consistent with a diagnosis of PTSD. Although no relationship was found between PTSD (traumatic) symptoms and potentially traumatic aspects of the first episode (including place of treatment, detention under the MHA etc.), intrusions and avoidance were positively related to retrospective appraisals of stressfulness of the ward (i.e. the more stressful they rated it the greater the number of PTSD symptoms) and the patient's coping style (sealers were less likely to report intrusive re-experiencing but more likely to report avoidance).
  
  
  CONCLUSIONS
  The results call into question whether it is possible to make claims for a simple causal link between psychosis and PTSD. Instead patients' appraisals of potentially traumatic events and their coping styles may mediate the traumatic impact of a first episode of psychosis.
authors.affiliation: University of Birmingham and Early Intervention Service, Harry Watton House, Aston, UK. chris_jackson@bsmht.nhs.uk
authors.forename: Chris
authors.initials: C
authors.lastname: Jackson
authors.forename: Claire
authors.initials: C
authors.lastname: Knott
authors.forename: Amanda
authors.initials: A
authors.lastname: Skeate
authors.forename: Max
authors.initials: M
authors.lastname: Birchwood
mesh_terms: D000223:Adaptation, Psychological; D000293:Adolescent; D000328:Adult; D001007:Anxiety / Q000175:diagnosis / Q000453:epidemiology; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D015897:Comorbidity; D003863:Depression / Q000175:diagnosis / Q000453:epidemiology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D011618:Psychotic Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy*; D012720:Severity of Illness Index; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000453:epidemiology*; D011795:Surveys and Questionnaires