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Brain zaps aim to silence wrist pain without surgery

NCT ID NCT04206215

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 19, 2026 · Updated 2 times

Summary

This study tests whether a painless brain stimulation technique (tDCS plus ultrasound) can reduce chronic pain in people with carpal tunnel syndrome. About 95 adults with long-term wrist pain will receive either real or fake (sham) stimulation to see if it lowers their pain scores. The goal is to find a non-invasive way to manage pain without drugs or surgery.

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 95 people

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

Started

Apr 2021

Expected to finish

Dec 2027

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 to 80 years

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. Able to provide informed consent to participate in the study 2. Subjects between 18 to 80 years old 3. Having symptomatic CTS spreading within or beyond the median nerve distribution (demonstrating 'extra-median spread'), involving at least 1 wrist, with chronic pain as defined by International Association for the Study of Pain (existing pain for at least 6 months and having pain on at least half the days in the past 6 months with an average of at least a 3 on a 0-10 VAS scale). 4. Pain resistant to first line therapies of chronic pain (pain still present at lower levels most of the time following therapy) 5. Must have the ability to feel pain as self-reported. Exclusion Criteria: 1. Subject is pregnant 2. Contraindications to tDCS+TUS: 1. intracranial metal implant 2. implanted brain medical devices 3. History of alcohol or drug abuse within the past 6 months as self-reported 4. Use of carbamazepine within the past 6 months as self-reported 5. Suffering from major depression (with a PHQ-9 score of ≥20) 6. History of neurological disorders involving stroke, brain tumors, or epilepsy with residual neurological symptoms as self-reported (note patients will also be evaluated via EEG at baseline about 1 week prior to stimulation and any patient showing abnormal EEG activity will be removed)) 7. History of unexplained fainting spells as self-reported 8. History of head injury resulting in more than a momentary loss of consciousness as self-reported and with current neurological deficits 9. History of intracranial neurosurgery as self-reported

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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.

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  3. A doctor treating you

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Contacts and locations

Locations

  • Spaulding Rehabilitation Network Research Institute

    RECRUITING

    Charlestown, Massachusetts, 02129, United States

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