Examining the prevalence of dissociative identity disorder in patients with childhood trauma.

Prevalence of Dissociative Identity Disorder in At-risk Outpatient Groups Reporting Childhood Trauma.

Not applicable Interventional Centre Psychothérapique de Nancy · NCT06330467

This study is trying to see how common dissociative identity disorder is in people with childhood trauma who have borderline personality disorder, functional dissociative crises, or early psychosis.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment350 (estimated)
Ages18 Years and up
SexAll
SponsorCentre Psychothérapique de Nancy Academic / other
Locations3 sites (Nancy and 2 other locations)
Trial IDNCT06330467 on ClinicalTrials.gov

What this trial studies

This study investigates the prevalence of dissociative identity disorder (DID) among three at-risk outpatient groups: individuals with borderline personality disorder, those experiencing functional dissociative crises, and patients with early psychosis. The research aims to assess the prevalence of other dissociative disorders and complex post-traumatic stress disorder (PTSD) while exploring correlations between childhood maltreatment, trauma onset age, and dissociative disorder diagnoses. Data will be collected through psychometric assessments and semi-structured clinical interviews, involving a total of 350 participants across the specified groups.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with a history of childhood psychotrauma and specific diagnoses related to dissociative disorders.

Not a fit: Patients without a history of childhood trauma or those not fluent in French may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding and treatment of dissociative disorders in patients with a history of childhood trauma.

How similar studies have performed: While the specific approach may be novel, studies have shown that understanding the prevalence of dissociative disorders in trauma-affected populations can lead to improved diagnostic and therapeutic strategies.

Eligibility criteria

Show full inclusion / exclusion criteria
I - Inclusion Criteria:

I-1: For all groups:

* Male or female
* Age \> or = 18
* Enrolled in or benefiting from a social security scheme
* Patient fluent in French
* Patient willing to undergo a psychological evaluation between 1h30 and 3h30
* Patient with a known history of psychotrauma in childhood before the age of 18 (sexual abuse, mistreatment, school harassment, natural disasters, attacks, etc.).
* Patient having received and understood complete information on the organization of the research and having given written free and informed consent prior to participation in the study.

I-2 : Patients in the borderline group

* Patients with main diagnosis of emotionally labile personality
* Patients with at least one psychiatric hospitalization in the last 3 years

I-3 : Patients in the early psychosis group

Patient with a diagnosis of mental state at risk of psychosis according to the criteria defined by CAARMS (Comprehensive Assessment of At Risk Mental State) OR Patients diagnosed with a first psychotic episode on an outpatient basis or following a hospital stay

I-4 : Patients in the functional dissociative crises group

Patients diagnosed with functional dissociative crises by a specialized epileptologist

II- Non-inclusion criteria

* Impairment of the subject making it difficult or not impossible to participate in the trial or to understand the information provided to him/her
* Patients with specific difficulties in understanding SCID-D questions
* Psychiatric condition requiring hospitalization
* Patients with symptoms of recent toxic consumption (alcohol, cannabis, other ...) disrupting assessment responses
* Patient taking part in a pharmacological study involving a pro-dissociative molecule of the psychedelic type
* Pregnant, parturient or nursing mothers
* Person deprived of liberty by judicial or administrative decision
* Person in a life-threatening emergency
* An adult under legal protection (guardianship, curatorship, safeguard of justice)
* Person unable to give consent and not subject to a legal protection measure

Where this trial is running

Nancy and 2 other locations

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 Dissociative DisorderDissociative Identity DisorderPsychosisFunctional Dissociative CrisesComplex PTSDBorderline
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.