How Many EMDR Sessions Will I Need?

There's no single number. Anyone who tells you otherwise is oversimplifying.

EMDR session counts vary widely. Research shows contained, single-incident trauma can sometimes shift in as few as three to six sessions, while complex or relational trauma typically takes longer, often six to twelve sessions or more. Those numbers come from research, not a promise about what your own timeline will look like, but they're a real starting point, not a guess.

What Affects How Many EMDR Sessions You'll Need

What often gets left out of this conversation is the part that comes first. EMDR includes a phase called resourcing. It's essentially a strong foundation from which to work from. It's the phase of building enough internal safety (or neutrality), grounding, and emotional regulation that reprocessing can actually be tolerated by the nervous system.

For a single, well-contained memory in someone already regulated, this might take a few sessions. For deeper or developmental trauma, the kind shaped over years, not one event, this phase can take considerably longer, sometimes several weeks or more, before reprocessing is even appropriate to begin.

The most important thing to remember is this isn't a delay. It's not a waste of time or money, it's part of the work. A nervous system that hasn't built enough capacity to stay present through activation isn't ready to reprocess safely yet, and rushing that step tends to cost more time later, not less.

Why Is The Range So Wide?

A single, contained memory is different material than a pattern that has been built up over years. The second kind involves more memories, more connections between them, and more groundwork before reprocessing even begins. This isn't about effort or motivation. It's about what's actually being worked with, and how much foundation needs to be in place first.

What Attachment-Focused Work Adds

A small 2023 study followed 18 people through attachment-focused EMDR, an average of fifteen sessions, and found a real decrease in attachment insecurity, tied in part to the quality of the relationship between client and therapist. It's a small study, and it doesn't prove this holds true for everyone. But it points to something worth naming: in attachment work, the relationship itself tends to be part of what's healing, not just the backdrop to it.

What Tends To Be True Either Way

Change is possible on a shorter timeline for contained, single-event trauma, and research supports that. For anything more complex or relational, the path is usually longer, but it's not indefinite, and the resourcing phase, even before reprocessing starts, is often where the first real shifts are felt.

If you're wondering where you'd land, that's what a consultation is for. Feel free to call, email, or text if you're interested in learning more.

Sydney Burkhardt, MA, LMFT # 161269 is a Licensed Marriage and Family Therapist in Pasadena, California. This post is for informational purposes only and does not constitute clinical advice or establish a therapist-client relationship. If you are experiencing significant mental health symptoms, please consult a qualified mental health or medical professional.

Sources: Barazzone et al. (2023), Journal of EMDR Practice and Research; Science Works Health, The 8 Phases of EMDR Therapy; Wellman Psychology, How Long Does EMDR Take for Complex Trauma; controlled trial data via NeuroTek and onlinececredits.com (Sweeton, 2025).