BackgroundThe 11th revision to the WHO International Classification of Diseases (ICD-11) identified complex post-traumatic stress disorder (CPTSD) as a new condition. There is a pressing need to identify effective CPTSD interventions.MethodsWe conducted a systematic review and meta-analysis of randomised controlled trials (RCTs) of psychological interventions for post-traumatic stress disorder (PTSD), where participants were likely to have clinically significant baseline levels of one or more CPTSD symptom clusters (affect dysregulation, negative self-concept and/or disturbed relationships). We searched MEDLINE, PsycINFO, EMBASE and PILOTS databases (January 2018), and examined study and outcome quality.ResultsFifty-one RCTs met inclusion criteria. Cognitive behavioural therapy (CBT), exposure alone (EA) and eye movement desensitisation and reprocessing (EMDR) were superior to usual care for PTSD symptoms, with effects ranging from g = −0.90 (CBT; k = 27, 95% CI −1.11 to −0.68; moderate quality) to g = −1.26 (EMDR; k = 4, 95% CI −2.01 to −0.51; low quality). CBT and EA each had moderate–large or large effects on negative self-concept, but only one trial of EMDR provided useable data. CBT, EA and EMDR each had moderate or moderate–large effects on disturbed relationships. Few RCTs reported affect dysregulation data. The benefits of all interventions were smaller when compared with non-specific interventions (e.g. befriending). Multivariate meta-regression suggested childhood-onset trauma was associated with a poorer outcome.ConclusionsThe development of effective interventions for CPTSD can build upon the success of PTSD interventions. Further research should assess the benefits of flexibility in intervention selection, sequencing and delivery, based on clinical need and patient preferences.

Objective:To report the results of the first randomized feasibility trial of Eye Movement Desensitization and Reprocessing (EMDR) plus Standard Care (SC) versus SC alone for DSM-5 posttraumatic stress disorder (PTSD) in adults with intellectual disabilities. Method:A total of 29 participants were randomized to either to EMDR + SC (n = 15) or SC (n = 14). Participants completed measures on traumatic stress (PCL-C) and comorbid distress at baseline, 1 week post-treatment and 3-month follow-up. Results:In the EMDR + SC group, 9 (60%) participants at post-treatment and 7 (47%) participants at 3-month follow-up were diagnosis free. In SC, 4 (27%) at post-treatment and follow-up were diagnosis free. At post-treatment, three participants (20%) dropped out from the EMDR + SC group, and 1 (7%) dropped out from the SC group.Conclusions: It is feasible, acceptable and potentially effective to deliver EMDR in this population group.

Preliminary results indicate that more severe psychopathology is associated with multiple traumatisation in childhood and adulthood compared with trauma experienced solely in adulthood.