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Could a talking therapy ease persistent concussion symptoms?

NCT ID NCT04614922

Symptom relief Sponsor: St. Olavs Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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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
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 Jul 21, 2026 · Last updated Jul 22, 2026 · Updated 1 time

Summary

This study tests whether a group-based therapy called Acceptance and Commitment Therapy (ACT) can help people with ongoing symptoms after a concussion, such as headaches and trouble thinking. Participants who have had symptoms for more than six months will attend seven group sessions over several weeks. The goal is to see if ACT improves daily function and reduces symptom burden compared to usual care.

What this could mean

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

Active substance
Acceptance and Commitment Therapy (ACT) — a behavioral therapy that helps people accept difficult thoughts and feelings while committing to value-driven actions
What this could lead to
If effective, ACT could offer a non-drug way to help people with long-lasting concussion symptoms feel better and return to work or school.
What could go wrong
This is a small, early-stage trial with only 48 participants, so results may not apply to everyone. The therapy is time-intensive and requires active participation.

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

48 people

The number who actually took part.

Started

Oct 2020

Finished

Sep 2025

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: * Having sustained a minimal HI or MTBI * PCS/ PTH had evolved within 1 week after the head trauma. * At least one post-concussion symptoms of at least moderate degree, that affects daily life. * \> 6 months post-injury. * First line treatment has been tried, e.g. psychoeducation, increase of physical activity and pharmacological treatments for headache Exclusion Criteria: * More than 5 years since last injury. * Symptoms are better explained by other conditions. * Severe communication problems, typically due to poor knowledge of Norwegian. * Severe psychiatric, neurological, somatic or substance abuse disorders that will make it problematic to function in a group and/or will complicate follow-up and outcome assessment.

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Conditions

The condition(s) this trial relates to.

Post-Concussion Syndrome Post-Traumatic Headache

As listed by the trial registrant

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

Post-concussion syndrome Post-traumatic headache

Contacts and locations

Locations

  • St Olavs Hospital Clinic of Physical Medicine and Rehabilitation

    Trondheim, Norway

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