Background: Post-traumatic stress disorder (PTSD) can occur following a traumatic event. It is characterised by symptoms of re-experiencing the trauma (in the form of nightmares, flashbacks and distressing thoughts), avoiding reminders of the traumatic event, negative alterations in thoughts and mood, and symptoms of hyper-arousal (feeling on edge, being easily startled, feeling angry, having difficulties sleeping, and problems concentrating).
Previous reviews have supported the use of individual trauma-focused cognitive behavioural therapy (TFCBT) and eye movement desensitisation and reprocessing (EMDR) in the treatment of PTSD. TFCBT is a variant of cognitive behavioural therapy (CBT), which includes a number of techniques to help a person overcome a traumatic event. It is a combination of cognitive therapy aimed at changing the way a person thinks, and behavioural therapy, which aims to change the way a person acts. TFCBT helps an individual come to terms with a trauma through exposure to memories of the event. EMDR is a psychological therapy, which aims to help a person reprocess their memories of a traumatic event. The therapy involves bringing distressing trauma-related images, beliefs, and bodily sensations to mind, whilst the therapist guides eye movements from side to side. More positive views of the trauma memories are identified, with the aim of replacing the ones that are causing problems.
TFCBT and EMDR are currently recommended as the treatments of choice by guidelines such as those published by the United Kingdom's National Institute of Health and Clinical Excellence (NICE).
Study characteristics: This review draws together up-to-date evidence from 70 studies including a total of 4761 people.
Key findings: There is continued support for the efficacy of individual TFCBT, EMDR, non-TFCBT and group TFCBT in the treatment of chronic PTSD in adults. Other non-trauma-focused psychological therapies did not reduce PTSD symptoms as significantly. There was evidence that individual TFCBT, EMDR and non-TFCBT are equally effective immediately post-treatment in the treatment of PTSD. There was some evidence that TFCBT and EMDR are superior to non-TFCBT between one to four months following treatment, and also that individual TFCBT, EMDR and non-TFCBT are more effective than other therapies. No specific conflicts of interest were identified.
Quality of the evidence: Although we included a substantial number of studies in this review, each only included small numbers of people and some were poorly designed. We assessed the overall quality of the studies as very low and so the findings of this review should be interpreted with caution. There is insufficient evidence to show whether or not psychological therapy is harmful.