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Can a simple nerve block ease Veterans' headaches?

NCT ID NCT07796074

Symptom relief Sponsor: Yale 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 31, 2026 · Last updated Sep 09, 2026 · Updated 3 times

Summary

This study tests whether injecting a local anesthetic called bupivacaine around a nerve in the back of the head can reduce headache frequency in veterans with post-traumatic headache. Participants receive one of three doses of the anesthetic or a placebo, and they track their headaches in a diary. The goal is to see if the nerve block can lower the number of headache days per week over the following month.

What this could mean

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

Active substance
bupivacaine injected around the greater occipital nerve
What this could lead to
If it works, this could offer a simple, low-cost way to reduce headache frequency in veterans with post-traumatic headache.
What could go wrong
The trial is small and early, so results may not apply broadly. The procedure may not provide lasting relief, and there is a small risk of allergic reactions or side effects from the anesthetic.

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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 36 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

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 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: * United States Military Veterans within VA Connecticut Healthcare System1. * Head injury with headaches that have continued to occur for at least three months after the head injury * At least two headache days per week * Review of the medical record does not reveal another source for headache Exclusion Criteria: * Skull defect * Other contraindication to bupivacaine * Allergy or adverse reaction (e.g., rash, cardiac effects) to amide anesthetics, such as lidocaine * Instruction from clinician to avoid amide anesthetics, such as lidocaine * Pregnant or lack of adequate birth control * Clinical review of the patient's case reveals red flag signs or symptoms (e.g., side-locked pain, unilateral numbness/weakness during headache, rapid ascension to peak pain, syncope during attacks) that warrant further work-up (e.g., MRI, arterial imaging). * Absence of imaging warranted by the standard of clinical care for the head injury with headaches.

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Conditions

The condition(s) this trial relates to.

Post-Traumatic Headache

As listed by the trial registrant

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

Post-traumatic headache

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

  • VA Connecticut Healthcare System

    RECRUITING

    West Haven, Connecticut, 06516, United States

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