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Ear freeze for back pain? scientists scan brain to find out

NCT ID NCT06825390

Knowledge-focused Sponsor: Keith M Vogt Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study is testing whether a quick cold spray on specific ear points can change how the brain processes chronic low back pain. Sixty adults with back pain for at least 6 months will get either real or fake (sham) ear stimulation. Researchers will use brain scans (fNIRS and MRI) to compare brain activity before and after treatment. The goal is to understand the mechanism, not to prove pain relief.

What this could mean

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

Active substance
cryo-auriculotherapy (cold gas applied to ear points)
What this could lead to
If it works, this could help explain how ear stimulation relieves pain, potentially leading to better non-drug treatments for chronic back pain.
What could go wrong
This is a small, early-stage study focused on brain changes, not pain relief. It may not show a clear benefit, and results may not apply to everyone with back pain.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 60 people

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

Started

Jul 2025

Expected to finish

Apr 2029

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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.

Inclusion Criteria: 1. Adult, at least 18 years old 2. Episodes of chronic low back pain at least daily for at least 6 months, with an average pain score within the last week of 3/10. Exclusion Criteria: 1. active lesions, skin disruptions, or neuropathy of either ear; 2. recent (\<1 month) analgesic procedures or surgery; 3. recent (\<1 month) start of new analgesic or psychoactive medication (including marijuana, opioids, tramadol, methadone, gabapentinoids, anti-depressants, anti-epileptics, mood-stabilizers, anti-psychotics, or stimulants); 4. history of chronic pain in shoulder or thumb (to avoid confounding at control stimulation points); 5. recent (\< 3 months) illicit drug use; 6. prior substance misuse/abuse; 7. cold-activated diseases (including: agammaglobulinemia, cold urticaria, cold agglutinin disease, cryofibrinogenemia, cryoglobulinemia, immunosuppression, Raynaud's disease, collagen or autoimmune diseases, multiple myeloma, platelet deficiency disorders, pyoderma gangrenosum.) \- MRI-specific exclusions additionally include: 8. Pregnancy or active attempts at conception; 9. Implanted metal or electronic device; 10. severe claustrophobia

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Conditions

The condition(s) this trial relates to.

Back Pain Low Back Pain lumbar disk degenerative disorder post laminectomy syndrome somatoform disorder

As listed by the trial registrant

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

Back pain lower back chronic Back pain without radiation Back pain, low Chronic low back pain Low back pain Lumbar disc disease Lumbar discogenic pain Lumbar pain syndrome Lumbar post-laminectomy syndrome Pain;back low;chronic

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

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    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

  • University of Pittsburgh

    RECRUITING

    Pittsburgh, Pennsylvania, 15213, United States

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