How many sessions does EMDR usually take?

This varies from person to person and depends on the memory or memories involved, so a psychologist agrees a plan with you rather than fixing a number in advance.

Is EMDR only used for post-traumatic stress disorder?

EMDR was developed for post-traumatic stress disorder and that is where the evidence is clearest, but it is also used for other distressing memories once a psychologist has assessed whether it is a suitable approach.

Will I need to describe the traumatic event in detail?

No. EMDR does not require someone to narrate an event repeatedly. The psychologist works with the memory, image and feelings attached to it while using eye movements or another form of bilateral stimulation.

Can EMDR bring up strong feelings during a session?

Yes, it can. Processing a difficult memory sometimes brings up strong emotions or physical sensations in the moment, which is why sessions start with building stability and coping resources before any reprocessing begins.

Does it matter how long ago the trauma happened?

No. EMDR is used for memories from childhood as well as more recent events. What matters is whether the memory still causes distress now, not how long ago it happened.

Do I need a formal diagnosis before starting EMDR?

Not necessarily. An assessment with a psychologist is the starting point, and that conversation helps establish what is going on and whether EMDR is a good fit.

Sep 9, 2026

Trauma that surfaces years later: how EMDR is used

EMDR (eye movement desensitisation and reprocessing) is a therapy used when a traumatic memory resurfaces years after the event, because it was never fully processed at the time. A later trigger, such as a life change, a loss or an anniversary, can bring it back into focus, and EMDR helps the brain finish that unfinished processing.

Why trauma can surface years later

Traumatic memories are not always processed and filed away in the same way as ordinary memories. When something distressing happens and the brain does not have the space or safety to work through it at the time, the memory can stay stored in a raw, unprocessed form. It can sit quietly for years, then be reactivated by something that seems unrelated on the surface, a piece of news, becoming a parent, a bereavement or reaching an age a parent was when something happened to them. Delayed surfacing like this is common. It does not mean someone did something wrong by not dealing with it sooner, and it does not mean the memory has got worse. It has simply stayed unresolved.

What EMDR is

EMDR stands for eye movement desensitisation and reprocessing. It is a structured psychological therapy, recommended by the National Institute for Health and Care Excellence (NICE) for post-traumatic stress disorder, that helps the brain finish processing a memory that has become stuck. Rather than asking someone to describe an event in detail again and again, EMDR uses sets of guided eye movements, or another form of bilateral stimulation such as alternating taps or tones, while the person briefly holds the memory in mind. The theory, supported by a growing body of research, is that this process mirrors some of what happens naturally during REM sleep, helping the brain file the memory away so it feels less immediate and less distressing to recall.

How an EMDR session works

A course of EMDR usually starts with time spent understanding someone’s history and current difficulties, and making sure they have enough stability and coping resources in place before any reprocessing work begins. Once that groundwork is done, sessions focus on specific memories. The psychologist asks the person to bring the memory to mind, along with the image, belief and physical sensation attached to it, while working through sets of eye movements or other bilateral stimulation. Between sets, the person reports back on what came up, and the process is repeated and adjusted as needed. Over a number of sessions, the aim is for the memory to lose its emotional charge, so it can be recalled as something that happened in the past rather than something that feels like it is happening now.

What EMDR can help with

EMDR was developed for post-traumatic stress disorder, and that remains where the evidence is clearest. It is used for single distressing events such as accidents, assaults or medical emergencies, and for trauma that built up over a longer period, such as difficult childhood experiences. Many people who seek it out are not dealing with one dramatic incident. They notice patterns, reacting strongly to situations involving criticism, conflict or feeling trapped, and trace that reaction back to something further in the past. A psychologist can help work out whether EMDR fits, or whether another evidence-based therapy is a better starting point.

Symptoms that often prompt someone to seek help

People tend to get in touch when they notice flashbacks or intrusive images, nightmares connected to a past event, a strong physical reaction to reminders, difficulty concentrating or a sense of being permanently on edge. Others describe feeling emotionally numb, avoiding certain places or conversations or finding that a recent, smaller stress has brought up feelings that seem too large for the situation in front of them. Any of these can be a sign that an older memory has not been fully processed.

What to expect if you’re new to therapy

Starting therapy for something that happened years ago can feel like an odd decision, particularly if life has moved on in most other ways. A first session is usually about listening and understanding, not immediately reprocessing a memory. The psychologist will ask about what is happening now, what someone wants to change, and what has helped or not helped in the past. EMDR is not the right fit for everyone or every situation, so this early conversation is also where that gets worked out together, honestly and without pressure.

Working online across Brighton and East Sussex

Clinical psychologists for Brighton and East Sussex work with adults online rather than in person. That suits people living in Brighton itself, from the seafront and the Lanes up into BN1 and BN2, as well as those in Hove, Kemptown, Preston Park, Hanover, Withdean and Portslade. It also suits people who commute regularly, for example those travelling from Brighton station to London Victoria or London Bridge, or on to Gatwick, where a fixed weekly in-person appointment would be difficult to keep to. Sessions take place on a laptop or phone, wherever there is a private, quiet space and a stable connection. We will update this site as the practice develops.

Getting started

If a memory from years ago still catches you off guard, that reaction makes sense, and EMDR is one of the approaches that exists specifically to help with it. Getting in touch is the starting point, a conversation about what has been happening and whether EMDR or another approach fits best.