Eye movement desensitization and reprocessing can help many people process trauma, but it is important to understand how negative side effects may appear. Being informed about what to expect supports safer, more comfortable progress in therapy.
Below is a compact overview of common reactions, timing, and actions you can discuss with your clinician.
| Common Negative Side Effects | Typical Timing | Intensity Level | Recommended Action |
|---|---|---|---|
| Emotional distress during or after sessions | During or within hours | Mild to moderate | Use grounding techniques and communicate with therapist |
| Increased anxiety or agitation | 1–3 days post-session | Mild to severe | Schedule follow-up, practice self-care, adjust pacing |
| Vivid dreams or intrusive memories | First few nights after session | Mild to moderate | Document dreams, share with clinician, maintain sleep routine |
| Headache or fatigue | Immediately or up to 48 hours | Mild to moderate | Rest, hydrate, discuss with therapist if persistent |
| Temporary increase in trauma-related thoughts | Within days after starting EMDR | Moderate to high | Strengthen coping skills, adjust treatment plan with professional guidance |
Common Negative Side Effects Overview
Many people undergoing EMDR report improvements, yet temporary challenges can occur. Typical negative side effects include emotional discomfort, changes in sleep, and brief increases in anxiety. Most clinicians monitor these reactions closely to keep the process within a tolerable window.
Understanding how side effects show up helps you recognize them early rather than feeling surprised. This awareness supports safer decision-making about when to slow down or adjust the pace of sessions.
Emotional Distress During Processing
During active sets of bilateral stimulation, it is possible to experience a rise in sadness, fear, or anger tied to the targeted memory. These moments are often part of the therapeutic work but can contribute to short-term distress.
Your therapist will usually guide you with calming strategies before, during, and after these periods. Sharing honestly about intensity helps tailor the intervention to your tolerance levels.
Increased Anxiety Or Agitation After Sessions
Some people notice a spike in anxiety or restlessness in the hours or days following a session. This reaction can stem from confronting difficult material or from the brain organizing new connections.
Working with your clinician to adjust session length or introducing additional grounding exercises can reduce this post-session agitation over time.
Changes In Sleep And Thought Patterns
Vivid dreams, intrusive memories, or trouble sleeping may appear shortly after beginning EMDR. Such effects often fade as the brain processes the material more fully.
Tracking your sleep and dream content in a simple journal provides useful information for your therapist and can help identify when extra support is needed.
Key Takeaways And Recommendations
- Expect possible emotional discomfort, changes in sleep, or brief increases in anxiety during or after EMDR.
- Use grounding and self-regulation techniques between sessions to manage side effects.
- Maintain open communication with your therapist about intensity and duration of reactions.
- Track symptoms in a simple log to identify patterns and inform treatment adjustments.
- Discuss risk factors early to create a safer, more personalized plan.
FAQ
Reader questions
Can EMDR make my symptoms worse before they get better?
Yes, some people notice a temporary increase in distress, especially in the first few sessions, but this often stabilizes as coping skills and pacing are refined with your therapist.
How long do negative side effects typically last after an EMDR session?
Most side effects, such as emotional discomfort or sleep disturbances, ease within a few hours to three days, though stronger reactions may require a slower treatment pace.
What should I do if I feel much more anxious a few days after EMDR?
Contact your therapist to adjust the plan, increase grounding strategies, and review self-care routines so the process remains within a manageable level of arousal.
Are there certain people who are more at risk for negative side effects with EMDR?
Individuals with unstable support systems, certain dissociative disorders, or high suicide risk may need additional safeguards, such as slower pacing or more frequent check-ins.