EMDR combined with gentle brain stimulation (tDCS) for fibromyalgia

Augmentation of EMDR With Transcranial Direct Current Stimulation (tDCS) in the Treatment of Fibromyalgia: a Double-blind Randomized Controlled Trial

Not applicable Interventional Parc de Salut Mar · NCT04084795

This project will test whether adding non-invasive brain stimulation (tDCS) to EMDR helps people with fibromyalgia who also have trauma-related symptoms, depression, or anxiety.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment96 (estimated)
Ages18 Years to 70 Years
SexFemale
SponsorParc de Salut Mar Academic / other
Locations1 site (Barcelona, Catalonia)
Trial IDNCT04084795 on ClinicalTrials.gov

What this trial studies

Researchers in Barcelona will randomize eligible patients to receive EMDR combined with active tDCS, EMDR with sham tDCS, or treatment as usual. tDCS is applied during EMDR sessions to modulate brain activity related to pain and stress while EMDR targets trauma-related memories. The trial measures pain intensity, depressive and anxiety symptoms, and trauma-associated symptoms after therapy and at follow-up. Comparisons will show whether active tDCS enhances or prolongs EMDR benefits beyond EMDR with sham stimulation or usual care.

Who should consider this trial

Good fit: Adults 18–70 with diagnosed fibromyalgia who report an average pain score of at least 4/10 in the prior two weeks, have current trauma-related symptoms plus depressive and/or anxiety symptoms, and are on stable medication for at least two weeks.

Not a fit: Patients with autoimmune or serious neurological/medical diseases, bipolar or psychotic disorders, active suicidal ideation, recent substance dependence, recent EMDR (within two years), pregnancy, metallic head implants, skin sensitivity conditions, pending litigation, or those without trauma-related symptoms are unlikely to qualify or receive benefit.

Why it matters

Potential benefit: If successful, the combination could produce larger and longer-lasting reductions in pain, mood symptoms, and trauma-related distress for people with fibromyalgia.

How similar studies have performed: EMDR is an established therapy for PTSD and small studies suggest benefit in fibromyalgia, and tDCS has shown modest effects on pain, but combining EMDR with tDCS is a relatively new approach with limited prior data.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age between 18 and 70 years old
* Mean pain score of at least 4 on the visual analog scale (VAS) in the two weeks preceding the clinical trial
* Presence of one or more traumatic events causing current trauma-related symptoms
* Current clinical symptoms of depression and/or anxiety
* 2 weeks of stable medication

Exclusion Criteria:

* Comorbid autoimmune or chronic inflammatory disease
* Neurological or serious medical diseases
* Bipolar disorder, schizoaffective disorder and schizophrenia
* Suicidal ideation
* Previous EMDR therapy in the past two years
* Substance abuse/dependency within 1 month prior to participation (except for nicotine abuse/dependency),
* Pending FM-related litigation or disability
* Metallic implants in the head
* Positive test for pregnancy
* Skin sensitivity diseases (psoriasis, eczema, dermatitis, etc.)

Where this trial is running

Barcelona, Catalonia

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions FibromyalgiaPsychological TraumaDepressive SymptomsAnxietyPsychological traumaPosttraumatic stress disorderMajor depressive disorderAnxiety disorder
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.