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Brain zaps for brain fog: new study tests tDCS for Post-Concussion syndrome

NCT ID NCT06376500

Symptom relief Sponsor: The Hong Kong Polytechnic University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This pilot study tests whether a non-invasive brain stimulation technique called tDCS, combined with cognitive training, can improve thinking speed and focus in people with persistent post-concussion syndrome. Forty adults who had a mild concussion 1-6 years ago will receive 10 sessions over two weeks. The study uses brain scans to understand how tDCS affects brain connections. It is an early, small study aimed at gathering initial evidence, not proving a treatment.

What this could mean

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

Active substance
transcranial direct current stimulation (tDCS) device
What this could lead to
If it works, this could point toward a non-drug treatment to ease cognitive problems like slow thinking and poor focus after a concussion.
What could go wrong
This is a very small pilot study (40 people) with no placebo group, so results may not be reliable or apply to everyone. tDCS can cause mild scalp discomfort but serious risks are rare.

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 40 people

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

Started

Sep 2025

Expected to finish

Feb 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.

Ages

18 to 65 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: * being 18 years old or older; * having a history of a mild TBI (less than 30 minutes loss of consciousness) 1-6 years prior to the study; * able to communicate in Chinese. Exclusion Criteria: * being without a confirmed diagnosis from the medical practitioner; * having a history of other neurological and psychiatric disorders, skull defect, recent medical instability (within 3 weeks); * being pregnant; * being medication for a psychiatric condition (e.g., major depression, anxiety, schizophrenia); * with any implanted devices or suffering from real claustrophobia or feel uncomfortable in small, enclosed spaces, like MRI tunnel

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Conditions

The condition(s) this trial relates to.

Post-Concussion Syndrome

As listed by the trial registrant

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

Functional magnetic resonance imaging Magnetic resonance spectroscopy Post-concussion syndrome Transcranial direct current stimulation

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

  • The Hong Kong Polytechnic University

    RECRUITING

    Hung Hom, Kowloon, Hong Kong

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