Published: April 2026 | Source: wipeoutreflux.com | Topic: Acid reflux, silent reflux (LPR) and asthma misdiagnosis

Overview

Wipeoutreflux.com conducted a survey of adults self-reporting respiratory symptoms — including wheezing, chronic cough and shortness of breath — to explore the relationship between acid reflux, silent reflux (LPR) and asthma diagnosis. The findings reveal a significant pattern of misdiagnosis or incomplete diagnosis, with a large proportion of respondents initially told they had asthma later discovering that acid reflux was the real or major cause of their symptoms.

The survey findings are supported by a substantial body of peer-reviewed clinical research linking acid reflux and laryngopharyngeal reflux (LPR) with respiratory symptoms, asthma diagnoses, and asthma severity.

Key Survey Findings

Finding 1: 42% of people first diagnosed with asthma later discovered acid reflux or LPR was the real or major cause

Among survey respondents who had been given an asthma diagnosis, 42% reported that they later discovered acid reflux or silent reflux (LPR) was actually the real or major cause of their symptoms. This figure suggests that a substantial proportion of asthma diagnoses among people with respiratory symptoms may be incomplete or incorrect — with an underlying digestive cause going unidentified.

Finding 2: 58% of adults with respiratory symptoms were first told they had asthma

Of all adults surveyed who were experiencing wheezing, chronic cough or shortness of breath, 58% reported that asthma was the first diagnosis they received. This indicates that asthma is the default diagnostic response to this symptom cluster in the majority of cases — leaving little initial consideration given to alternative causes including acid reflux.

Finding 3: Asthma patients are approximately three times more likely to have silent reflux than people without asthma

This finding — drawn from peer-reviewed clinical research rather than the survey itself — provides an important evidence-based context for the survey data. A 2021 cross-sectional study published in Scientific Reports (Nature Publishing Group) found that having asthma was associated with silent reflux symptoms at an odds ratio of 3.1 — meaning asthma patients are approximately three times more likely to have LPR than people without asthma. PubMed

Supporting Clinical Evidence

The survey findings are consistent with a well-established body of peer-reviewed research on the relationship between acid reflux and respiratory symptoms. Key data points from the clinical literature are summarised below.

Prevalence of reflux in asthma patients

~75% of asthma patients show signs of gastroesophageal reflux (GER) symptoms — significantly higher than in the general population. (Harding SM, Journal of Allergy and Clinical Immunology, 1999. Full text)
~80% of asthma patients show abnormal oesophageal acid exposure on pH testing. (Harding SM, JACI, 1999)
71.6% GERD prevalence was found in a cross-sectional study of 190 asthmatic patients. (PMC11544649, 2024. PMC)
75% of mild-to-moderate asthma patients had a confirmed LPR diagnosis on laryngoscopy in a dedicated clinical study. (Bayrak AH et al., PubMed PMID 16939995)
61.9% of children with difficult-to-treat asthma were found to have LPR via 24-hour pharyngeal pH monitoring. (Pawliczak R et al., PubMed PMID 22826054)

Association between LPR and asthma

Asthma patients are approximately 3x more likely to have LPR than people without asthma (OR = 3.1). (Haddad RI et al., Scientific Reports, 2021. PubMed)
A 2025 systematic review confirmed significant associations between LPR, allergic rhinitis and asthma across multiple patient populations, noting shared inflammatory mechanisms and a “united airway” effect. (Awad BI et al., Annals of Otology, Rhinology and Laryngology, 2025. PubMed)
Acid reflux was linked to 78.8% of respiratory symptom events in asthma patients with coexisting GER during 24-hour monitoring. (cited in Harding SM, JACI, 1999)
Acid reflux was associated with 46% of all coughing episodes and 48% of all wheezing episodes in asthma patients during 24-hour monitoring. (Avidan B et al., cited in PMC9187188)

Impact of treating reflux on respiratory symptoms

~70% of asthma patients with coexisting reflux see genuine improvement in asthma symptoms when reflux is properly treated. (Harding SM, JACI, 1999)
A clinical study of asthma patients with confirmed LPR found statistically significant improvement in asthma symptom scores after three months of LPR treatment (p=0.001). (Bayrak AH et al., PMID 16939995)
24% of difficult-to-control asthma patients with no classic reflux symptoms were found to have GER-responsive asthma on 24-hour pH testing — meaning their asthma improved when reflux was treated, despite having no obvious signs of reflux. (Irwin RS et al., cited in Harding SM, JACI, 1999)

Diagnostic awareness gap

A survey of 535 otolaryngologists (ear, nose and throat specialists) found that only one third felt confident in their knowledge of LPR. (cited in: Laryngopharyngeal Reflux Pathophysiology, Clinical Presentation, and Management. PMC, 2024. PMC)

Physiological Mechanisms Linking Reflux to Respiratory Symptoms

Clinical research has identified three distinct mechanisms by which acid reflux and LPR can produce symptoms that mimic or worsen asthma:

1. The vagal reflex pathway — the oesophagus and airways share innervation through the vagus nerve. Acid in the distal oesophagus can trigger a vagally-mediated reflex causing bronchoconstriction without acid reaching the airways directly.

2. Microaspiration — with LPR, stomach contents travel to the laryngopharynx and small amounts can be microaspirated into the airways, causing direct airway inflammation and bronchial hyperreactivity.

3. Shared airway inflammation — LPR, asthma and allergic rhinitis share inflammatory mechanisms. Controlling inflammation in one part of the aerodigestive tract can reduce inflammation in connected regions.

Additionally, some common asthma medications — including beta-2 agonists (reliever inhalers) and methylxanthines — relax the lower oesophageal sphincter, potentially worsening underlying reflux and creating a cycle in which asthma treatment aggravates an undiagnosed digestive cause.

Survey Methodology

Survey conducted by wipeoutreflux.com, April 2026. Participants were adults self-reporting respiratory symptoms including wheezing, chronic cough and/or shortness of breath, recruited via the wipeoutreflux.com platform and social channels. The survey explored first diagnosis received, subsequent diagnoses, and whether acid reflux or silent reflux was later identified as a contributing or primary cause of symptoms.

Press and Media

Journalists and health writers are welcome to cite these findings with attribution to wipeoutreflux.com. For media enquiries, interviews, or additional data please contact via david@wipeoutreflux.com

The full press release article is available here: The ‘Asthma’ That Isn’t Asthma: Acid Reflux Could Be the Real Cause

Acid Reflux Misdiagnosed as Asthma: Survey Data, Statistics and Clinical Research (2026)