Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Pain testing for people with idiopathic REM sleep behavior disorder

Official title: Pain Assessment in Patients With Idiopathic REM Sleep Behaviour Disorder

Run by University Hospital, Toulouse · NCT07365566 · Data updated 2026-11-12

This study will test whether people with idiopathic REM sleep behavior disorder feel and report pain differently using brief thermal pain tests and questionnaires.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment24 (estimated)
SponsorUniversity Hospital, Toulouse
Academic / other
Locations1 site (Toulouse)
StatusRecruiting
StartedFebruary 24, 2026
Main results expectedAugust 2026
Study endsAugust 2026
Registry record updatedMay 1, 2026
Trial IDNCT07365566 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with polysomnography-confirmed idiopathic REM sleep behavior disorder, no clinical diagnosis of Parkinson disease or other neurodegenerative disorder, and the ability to complete testing and questionnaires are ideal candidates.

Probably not a fit

People already diagnosed with Parkinson disease, dementia with Lewy bodies, multiple system atrophy, those with severe depression, or anyone unable to complete the procedures are unlikely to benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Researchers will recruit people with polysomnography-confirmed idiopathic REM sleep behavior disorder and a control group of patients with narcolepsy type 1 who have coexisting REM sleep behavior disorder. Participants will complete standardized pain questionnaires and undergo quantitative thermal pain testing to measure pain thresholds and responses; motor symptom evaluations are not part of the protocol. The aim is to characterize pain perception in iRBD as a possible prodromal feature of Parkinson disease and to compare it with a control population. Results will inform whether pain measures could help identify early neurodegenerative changes or improve symptom management.

Why it matters

Potential benefit: If successful, this could identify pain-related changes that help detect people at higher risk of Parkinson disease earlier and guide better pain care in prodromal stages.

How similar studies have gone: Pain is well described in early Parkinson disease, but pain perception specifically in iRBD is largely unstudied, making this an exploratory and relatively novel investigation.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria:

* Diagnosed with iRBD confirmed by polysomnography;
* No clinical diagnosis of Parkinson's disease or other diagnosis of neurodegenerative disease;
* Ability to understand and complete study procedures and questionnaires;

Control group:

* Diagnosed with narcolepsy type 1;
* Coexisting REM sleep behavior disorder confirmed by polysomnography;
* Ability to understand and complete study procedures and questionnaires;

Exclusion Criteria:

* Diagnosed Parkinson's Disease, dementia with Lewy bodies or multiple system atrophy;
* Severe depression according to Diagnostic and Statistical Manual of Mental Disorders (DSM V);
* Inability to complete study procedures or questionnaires.

Where it's running

  • Centre Expert Parkinson Hôpital Pierre Paul Riquet Place du Docteur Baylac
    Toulouse, France
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.