Does trauma-focused CBT work?
Written by the clinical team at The Lyceum Clinic. Clinically reviewed by Sanah Younis, Clinical Director, BABCP-accredited (no. 1000792). Published 28 October 2026. Last reviewed 28 October 2026.
It is one of the best-evidenced treatments in mental health and one of two first-line recommendations for PTSD in UK guidance. For single-event trauma, most people who complete a course no longer meet the criteria for PTSD at the end, and the gains hold. It works less quickly for complex trauma, and it depends on doing the memory work.
What the evidence shows
Trauma-focused CBT, and specifically the Ehlers and Clark model we use, has been tested repeatedly in controlled trials and is recommended by NICE as a first-line treatment for PTSD. We do not quote percentages, because a figure from a trial population says little about you; what matters is that the approach is well established and that your own progress is measured.
Why it sometimes does not
The main reason it fails is that the memory work never happens. People understandably drop out before the hotspot sessions, or a therapist avoids them. Memory work is the treatment; the rest is preparation and consolidation. The second reason is complex, repeated or early trauma, where stabilisation and longer-term core-belief work have to come first and the course is longer.
For more detail, read about trauma-focused CBT.
What it feels like when it has worked
People say the memory feels like it happened a very long time ago. It is still sad, but it is a story now, properly archived, not a live threat in the corner of the room. The avoidance drops away and the alarm system stops firing at the old triggers.
How we know
The PCL-5 at every review, so you can see the change rather than hope for it. If trauma-focused CBT is not moving things, EMDR is the alternative we discuss, and the formulation tells us which of the two was the better fit in the first place.