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Nerve block injection offers hope for chronic cough sufferers

NCT ID NCT04421092

Symptom relief Sponsor: Medical University of South Carolina Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested whether numbing the nerve that controls the voice box could reduce chronic cough. 17 adults with a suspected overactive cough reflex received either four nerve blocks or four placebo injections. Researchers tracked cough severity and quality of life using questionnaires over three months. The goal was to see if the treatment could safely ease symptoms.

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 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

17 people

The number who actually took part.

Started

Jul 2020

Finished

Dec 2022

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

Accepted

You do not need to have the condition being studied to take part.

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: * History consistent with neurogenic cough * Exclusion of other etiologies (see exclusion criteria) * Age ≥ 18 Exclusion Criteria: * Current neuromodulating medication use * Untreated other etiologies of cough: Current smoker Current ACE/ARB use Abnormal PFTs within 6 months Uncontrolled OSA Abnormal CXR within 6 months RSI \> 13 or RFS \>11 AND workup positive for GERD (esophagram, 24-hour pH probe, manometry, EGD)

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Conditions

The condition(s) this trial relates to.

Chronic Cough Cough

As listed by the trial registrant

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

Cough Neurogenic cough Superior laryngeal nerve block

Contacts and locations

Locations

  • Medical University of South Carolina

    Charleston, South Carolina, 29403, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.