EMDR for PTSD

Most of what EMDR is now used for sits ahead of the evidence. Depression, addiction, chronic pain, OCD, eating disorders, self-esteem. Some of it may turn out to be justified. Much of it is currently held up by enthusiasm.

PTSD is different. PTSD is the thing EMDR was built for, and it is the one place where the evidence genuinely stacks up.

If you have PTSD and someone offers you EMDR therapy, you are being offered a treatment that is recommended by NICE, recommended by the World Health Organisation, delivered thousands of times a year on the NHS, and supported by more than thirty randomised controlled trials.

This article is about what that actually means, and where the caveats sit.

What PTSD is, briefly

PTSD symptoms cluster into four groups.

Intrusion. Flashbacks, nightmares, intrusive memories, and severe distress when something reminds you of the event.

Avoidance. Steering around the places, the people, the conversations. Not thinking about it. Not talking about it.

Negative changes in thinking and mood. Guilt. Shame. Detachment from other people. Hopelessness about the future. Gaps in your memory of the event itself. Feeling emotionally flattened.

Changes in arousal and reactivity. Hypervigilance. Sleeping badly. Irritability. Startling easily. Not being able to concentrate.

Symptoms usually appear within a month, though sometimes they arrive years later. Not everyone who goes through something terrible develops PTSD. And you do not have to have been there yourself: learning that something happened to someone you love can be enough.

Why EMDR was built for this

EMDR started here. Shapiro developed it in the late 1980s and the first population it was tested on was people with PTSD, largely combat veterans and survivors of sexual assault.

The model, if you take it on its own terms, is a good fit. A traumatic event overwhelms the brain's normal capacity to file an experience. The memory does not get processed and stored properly. It stays in a raw state, still carrying the images, the beliefs, the emotions and the body sensations that were present at the time. Which is why it does not feel like remembering. It feels like being back there.

That description is very close to what PTSD actually is. The flashback is the model's central claim made visible.

Whether the mechanism is right is a separate argument. What matters clinically is that the treatment works.

What the evidence says

Here is the part I want to be precise about, because the numbers get inflated in marketing copy.

<cite index="16-1">NICE recommends EMDR for adults with a diagnosis of PTSD or clinically important symptoms of PTSD who present more than three months after a traumatic event.</cite> It is available through NHS Talking Therapies. <cite index="21-1">In 2022/23, England's Talking Therapies services delivered 6,675 finished courses of EMDR for PTSD, alongside 30,441 courses of trauma-focused CBT.</cite>

Note the ratio. EMDR is a genuine mainstream option, and it is also the minority option.

<cite index="21-1">A systematic review and meta-analysis published after the NICE guidelines pooled sixteen randomised controlled trials covering 1,031 adults, plus thirteen further RCTs that had informed NICE in 2018. It found EMDR was significantly better than waitlist or usual care. It found no significant difference in treatment effect between EMDR and trauma-focused CBT: both significantly improved PTSD symptoms. EMDR treatment was generally shorter, with a lower burden on patients' time. One modelling study found EMDR the most cost-effective of eleven interventions compared, including trauma-focused CBT.</cite>

That is a good result and it deserves saying clearly. It is also, if you read it carefully, a result about equivalence rather than superiority. EMDR is as good as the alternative. It is not better than the alternative. Where it may have an edge is that it takes less of your time and costs the NHS less.

<cite index="21-1">The same review is honest about the quality of what it was pooling. Most studies had small sample sizes, and all but one carried a high or moderate risk of bias.</cite>

That is the state of the field. Real, consistent, not enormous, and built on a literature with known weaknesses.

You will sometimes see a success rate of 80 to 90 percent quoted. That figure traces back to trials of people with single-incident trauma, and I will come back to why that qualification matters more than anything else in this piece.

The caveat that changes everything

NICE offers trauma-focused CBT to adults with PTSD. It considers EMDR.

Those are different words and they are chosen carefully. Trauma-focused CBT is the first-line treatment. EMDR is a recommended option.

And for children, the position is sharper. <cite index="17-1">NICE recommends considering EMDR for children and young people aged 7 to 17 only if they do not respond to or engage with trauma-focused CBT.</cite> <cite index="19-1">The reason is explicit in the guideline's own rationale: EMDR was found to be less clinically effective and less cost effective than all individual trauma-focused CBT interventions in that age group.

I have not seen that stated plainly on many EMDR clinic websites.

Single trauma versus everything else

This is the distinction that matters most, and it is buried in almost every headline figure you will read.

If you have PTSD from one discrete event, an assault, a crash, a disaster, a death you witnessed, and you are otherwise reasonably stable, EMDR is fast. Shapiro's benchmark is one to three reprocessing sessions. Trials found 84 to 90 percent of single-trauma participants no longer met criteria for PTSD after three sessions.

The same research found something else, which is quoted far less often. A study at Kaiser Permanente eliminated PTSD in 100 percent of single-trauma victims and in 77 percent of multiple-trauma victims.

Same treatment. Different population. Different result.

And complex PTSD, the kind that comes from prolonged repeated trauma, usually in childhood, is a different proposition entirely. Multiple memories layered on each other. Emotional dysregulation. Frequently dissociation. Here the honest position, and it is in the literature, is that a client with significant dissociation needs stabilising work before any reprocessing begins.

Shapiro was blunt about this. Of all the reports she received over the years of EMDR causing harm, the ones involving dissociative clients came up most frequently by a wide margin. Not because EMDR cannot help them, but because it can destabilise them badly if used without adequate screening and preparation.

So: EMDR for single-incident PTSD is fast, well-evidenced and safe.

EMDR for complex PTSD is slower, requires a therapist who genuinely knows what they are doing, and requires a preparation phase that may run for months before anything is processed.

Both of those things are true and clinics tend to advertise only the first.

Why you might choose it

Assume you have PTSD, and assume you have been offered both trauma-focused CBT and EMDR, and they perform about the same in the trials. What tips it?

You do not have to describe the event in detail. In EMDR you hold the memory in mind. You do not have to narrate it aloud, session after session, in the way that some trauma-focused CBT protocols require. For some people, particularly with sexual trauma, particularly where shame is a large part of the picture, this is the difference between doing the treatment and dropping out of it.

It is shorter. The meta-analysis found EMDR generally involved less of the patient's time.

No homework. Some trauma-focused CBT protocols involve substantial between-session work.

It may suit you better. That is not a small thing. A treatment you complete beats a marginally superior treatment you abandon in week three.

And why you might not. If you would rather understand your thinking patterns and work on them explicitly, CBT does that and EMDR largely does not. If you are a child or young person, the guideline points you to trauma-focused CBT first. If you find the whole eye-movement business implausible and it is going to sit in the back of your mind, that scepticism is itself a reason to choose something else.

The thing the controversy does not change

You may have read that EMDR is disputed, that dismantling studies suggest the eye movements do nothing, that critics call it a "purple hat therapy" dressed up around ordinary exposure and cognitive work.

All of that is a live argument, and I have written about it elsewhere.

Here is what it does not do. It does not undermine the case for EMDR in PTSD.

The trials measure the whole package. They compare EMDR as delivered against CBT as delivered and against no treatment, and EMDR wins against no treatment and draws with CBT. That result holds regardless of which component is doing the work. If it turns out the eye movements are decoration and the effect comes from exposure, structure, cognitive restructuring and the therapeutic relationship, then the treatment still reduces your symptoms by the same amount.

The mechanistic dispute is a serious problem for the theory. It is not a reason to decline a treatment that NICE recommends and that has thirty-plus RCTs behind it.

What to actually do

If you think you have PTSD, go to your GP. Trauma-focused CBT and EMDR are both available through NHS Talking Therapies, and in many areas you can self-refer.

If you are offered EMDR, ask whether your therapist is EMDR Europe accredited, and if you have complex or childhood trauma, ask specifically about their experience with dissociation. That question is worth more than any other question in this article.

Expect the first two or three sessions to be history and preparation with no eye movements at all. If they skip that, be worried.

And if you have one clear traumatic event and a life that is otherwise holding together, expect this to be shorter than you feared. That is the genuinely remarkable thing about EMDR for single-incident PTSD, and it is the claim that has actually survived thirty-five years of people trying to knock it down.

This is general information, not clinical advice. If you think you have PTSD, speak to your GP. In many parts of England you can self-refer to NHS Talking Therapies. If you are in crisis, contact NHS 111 or Samaritans on 116 123.

References

Brayer, R. (2023). The Art and Science of EMDR: Helping Clinicians Bridge the Gap. PESI Publishing.

National Institute for Health and Care Excellence. (2018). Post-traumatic stress disorder (NG116). https://www.nice.org.uk/guidance/ng116

Shapiro, F. (2017). Eye Movement Desensitization and Reprocessing (EMDR) Therapy: Basic Principles, Protocols, and Procedures (3rd ed.). Guilford Press.

World Health Organization. (2013). Guidelines for the management of conditions specifically related to stress. WHO.