Most people who come to us about trauma have already told the story. They have told it to a partner at midnight, and sometimes to a therapist or two. They can describe what happened with remarkable accuracy. The memory still shows up uninvited, on a drive home or in the middle of a Tuesday meeting, and when it does the body reacts as though the event were happening again.
That gap between knowing what happened and no longer feeling it in your chest is what eye movement desensitization and reprocessing, better known as EMDR, was built to close. Below you will find what EMDR is, what a course of it looks like, and what the research does and does not show.
What EMDR is
EMDR is a structured, eight-phase therapy developed by psychologist Francine Shapiro in the late 1980s. You bring a specific memory to mind, along with the belief about yourself that came attached to it and where you feel it in your body. While you hold that memory, your therapist guides your attention through bilateral stimulation. That is most often side-to-side eye movements, though tapping or alternating tones work too.
The leading explanation is that dividing your attention between the memory and the rhythm makes the memory less vivid and less emotionally loud, which gives the brain a chance to store it as something from the past. Researchers still debate the exact mechanism, and anyone who tells you it is fully settled is overselling it.
Pay attention to what is missing from that description. Nobody asks you to narrate the event in detail, and nobody assigns homework that requires reliving it between sessions. Clients who have already told their story many times often say that was the first thing that surprised them.
What a course of EMDR looks like
The eight phases run from history-taking and treatment planning, through preparation, assessment, desensitization, installation, a body scan, closure, and reevaluation. The eye movements belong mostly to the desensitization phase. Everything around it exists to make that phase safe and useful.
Preparation deserves more credit than it usually gets. Before any memory is touched, you learn how to settle your body and how to pause a session on purpose. For people who spent years being the calm one at work or at home, that skill can be new on its own. The length of preparation varies, and clients with long or layered histories often need more of it. A good clinician lets that be true without hurrying it.
Once reprocessing begins, a session usually moves in short sets. You notice what comes up, report as much or as little as you want, and the therapist keeps you oriented. Each session ends with closure, so you leave steady rather than mid-memory. At the next visit, reevaluation checks whether the target memory has actually shifted before moving on.
At Catalyst every session is by telehealth, and EMDR therapy can be adapted to it. Bilateral stimulation can be guided with a moving dot on screen or with self-tapping, and your therapist can see and hear how you are doing the whole time. Clients join from a home office or from the one quiet room in a busy house.
What the research says
A 2024 systematic review and individual participant data meta-analysis in Psychological Medicine (Wright and colleagues) looked at 15 eligible randomized trials and pooled participant-level data from eight of them, covering 346 patients. EMDR did not differ significantly from other psychological treatments on PTSD symptom severity, treatment response, remission, or dropout. That is a finding of no detectable gap, which is useful to know and is not the same as proof that the treatments are interchangeable. The same analysis flagged two moderators worth knowing about. Men were more likely to drop out of EMDR, and participants who were unemployed had higher symptom severity after EMDR.
A 2026 overview of systematic reviews in the European Journal of Trauma and Dissociation (Arriazu-Dominguez and colleagues) pulled together 22 reviews. It found that EMDR may reduce PTSD symptoms compared with inactive controls, and that it looked comparable to active comparison treatments. The authors were candid that the certainty of the evidence was mostly low to very low, and only 11 of the 22 reviews reported formal certainty ratings. That does not erase the findings, but it is a reason to read the field with care.
A 2023 randomized controlled trial in Frontiers in Psychology (Farrell and colleagues) tested group EMDR delivered over video to frontline and emergency workers during the pandemic. Among the 85 participants who completed the study, average PTSD scores fell from 36.8 to 21.2 after treatment. Anxiety scores fell from 11.2 to 6.49 and depression scores from 11.7 to 6.64. The trial also found no treatment effect on moral injury at the six-month follow-up, which matters for anyone whose distress centers on decisions they had to make.
It helps to remember what studies like these can and cannot tell you. They describe averages across groups of people, and they cannot predict how your own course of treatment will go. Your history, your current stress load, and how steady your life is right now all shape the pace. That is why a thorough first phase matters more than any statistic on a page.
The evidence is encouraging and modest in its certainty. One trial suggests group video EMDR can work for frontline workers, and the researchers behind these studies are open about where the limits sit.
Who tends to benefit
In our practice, high-achieving professionals often arrive fluent in their own patterns. They can name the attachment style and the family role they were handed. What they want is for the body to catch up with the insight, and EMDR works at that level. First responders carry a different version, where the work is manageable until one call refuses to stay in the past. The group trial above studied frontline and emergency workers, though it is a single trial.
Couples sometimes find that one partner’s unprocessed memory keeps getting relitigated as an argument about dishes or tone. Treating the memory can lower the heat of the argument without anyone needing to win it. Parents often notice the benefit in small moments, such as a school-pickup text or a child’s cry from another room that used to set off a flood and now lands as an ordinary sound.
Realistic benefits and honest limits
The benefits clients describe most are quieter intrusive memories and a body that settles faster after a reminder, along with less energy spent avoiding certain streets or conversations. The research points toward reductions in PTSD symptoms and, in the group trial, in anxiety and depression as well, with the certainty caveats described above.
The limits are real. EMDR is not a cure-all, and it does not rewrite what happened. It also cannot resolve the weight of moral decisions on its own. It also works best when preparation is respected. Someone in the middle of a crisis, or still living in an unsafe situation, may need stabilization first. That is a pacing decision, and it is made together.
Finding out whether EMDR fits
Some memories get talked around for years while the body keeps its own account of them. If that sounds familiar and you are curious whether EMDR fits, we offer a 15 minute conversation to talk it through. You can book a time here.
This post is educational and is not a substitute for individual care. If you are in crisis, call or text 988.
References
- Arriazu-Dominguez, M., Martinez-Calderon, J., Matías Soto, J., & Cano-Garcia, F. J. (2026). Is EMDR effective for improving post-traumatic stress symptoms in people with post-traumatic stress disorders? An overview of systematic reviews with meta-analysis. European Journal of Trauma & Dissociation. https://doi.org/10.1016/j.ejtd.2026.100704
- Farrell, D., Moran, J., Zat, Z., Miller, P. W., Knibbs, L., Papanikolopoulos, P., Prattos, T., McGowan, I., McLaughlin, D., Barron, I., Mattheß, C., & Kiernan, M. D. (2023). Group early intervention eye movement desensitization and reprocessing therapy as a video-conference psychotherapy with frontline/emergency workers in response to the COVID-19 pandemic in the treatment of post-traumatic stress disorder and moral injury: An RCT study. Frontiers in Psychology, 14. https://doi.org/10.3389/fpsyg.2023.1129912
- Wright, S. L., Karyotaki, E., Cuijpers, P., Bisson, J., Papola, D., Witteveen, A., et al. (2024). EMDR v. other psychological therapies for PTSD: A systematic review and individual participant data meta-analysis. Psychological Medicine, 54(8), 1580-1588. https://doi.org/10.1017/S0033291723003446
About the author: Gardner McCullough, LCSW-C (MD), LCSW (VA), is the founder of Catalyst Counseling and an EMDR Certified clinician providing trauma-focused telehealth therapy in Maryland, DC, and Virginia. Learn more about EMDR therapy at Catalyst.