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AI reads your face to unlock chronic pain secrets

NCT ID NCT04896827

Knowledge-focused Sponsor: Université de Sherbrooke Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused This study
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study aims to develop a screening test for a pain control mechanism called DNIC, which is often faulty in people with chronic pain. Researchers will use cameras to capture facial expressions during pain tests and apply artificial intelligence to see if they can automatically measure pain and pain control effectiveness. The study includes both healthy volunteers and people with chronic pain.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could lead to a simple, automated test using facial recognition to help diagnose pain control problems in chronic pain patients.
What could go wrong
The study is suspended, and it is still early-stage research. The AI algorithm may not be accurate enough for clinical use, and results may not apply to all pain conditions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 244 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2022

Expected to finish

Dec 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Male and female volunteers, with and without chronic pain.

Ages

18 to 79 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Healthy participants Inclusion Criteria: * 18-79 years old * No chronic pain * Able to provide consent Exclusion Criteria: * Cardiovascular disease (arrhythmia, cerebrovascular accident, infarction...) * Raynaud syndrome * Severe psychiatric disease (dementia, schizophrenia, psychosis, major depression) * Injuries or loss sensitivity to their forearms or hands * Pregnant women or in post-partum period (\<1 year) Participants with chronic pain Inclusion Criteria: * 18-79 years old * Chronic pain (chronic pain is defined by any regular pain for more than 6 months) * Able to provide consent Exclusion Criteria: * Cardiovascular disease (arrhythmia, cerebrovascular accident, infarction...) * Raynaud syndrome * Severe psychiatric disease (dementia, schizophrenia, psychosis, major depression) * Injuries or loss sensitivity to their forearms or hands * Pregnant women or in post-partum period (\<1 year) * Chronic pain caused by cancer or migraine

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Conditions

The condition(s) this trial relates to.

Chronic Pain chronic pain syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Chronic pain

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Université de Sherbrooke

    Sherbrooke, Quebec, J1H 5N4, Canada

More trials for these conditions

Other studies related to the condition(s) this trial covers.