Clinical trial Recruiting at 1 site Early Phase 1 Interventional Ages 18 and up

Injecting steroids to treat chronic cough

Official title: Prospective Placebo-Controlled Trial of Intramuscular Steroid Administration for the Treatment of Unexplained Chronic Cough

Run by Medical University of South Carolina · NCT06634823 · Data updated 2026-11-12

This study is testing if steroid injections can help people with a long-lasting cough that doesn't have a clear cause feel better compared to a placebo.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment40 (estimated)
SponsorMedical University of South Carolina
Academic / other
Locations1 site (Charleston, South Carolina)
StatusRecruiting
StartedDecember 2, 2024
Main results expectedJune 30, 2027
Study endsJune 30, 2027
Registry record updatedJuly 22, 2026
Trial IDNCT06634823 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with a history of chronic unexplained or refractory cough.

Probably not a fit

Patients who are current smokers, have uncontrolled diabetes, or have other specified exclusion criteria may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to evaluate the effectiveness of intramuscular steroid injections in treating patients with unexplained chronic cough. It is designed as a prospective, placebo-controlled, single-blind, randomized clinical trial where participants will receive either a steroid injection or a placebo. The outcomes will be assessed using patient-reported measures, including the Leicester Cough Questionnaire and a visual analogue scale for symptom severity. The study also aims to document any adverse reactions to the treatment.

Why it matters

Potential benefit: If successful, this treatment could provide significant relief for patients suffering from chronic cough that has no identifiable cause.

How similar studies have gone: Previous studies have shown promising results with similar approaches, particularly with superior laryngeal nerve injections for neurogenic cough.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* History consistent with chronic unexplained or refractory cough
* Age ≥ 18

Exclusion Criteria:

* Current smokers
* Uncontrolled diabetes (A1c\>7%)
* Patients on ACE inhibitors or Angiotensin II receptor blockers (ARBs)
* Abnormal pulmonary function testing (PFTs) since start of the cough
* Patients with uncontrolled obstructive sleep apnea
* Abnormal chest X-ray within past 6 months
* Uncontrolled reflux
* Prior superior laryngeal nerve injection
* Current neuromodulating medication use for chronic cough\*

Where it's running

  • Medical University of South Carolina
    Charleston, South Carolina, United States
    Recruiting

Study contacts

  • Principal investigator: Lauren Howser — Medical University of South Carolina
  • Study coordinator: Kirsten Meenan
  • Email: meenan@musc.edu
  • Phone: 843-792-6755

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.