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Dysfunctional breathing is a pattern of breathing that becomes inefficient — often too fast, shallow or upper-chest — and can cause breathlessness, light-headedness, chest tightness and anxiety even when the lungs are healthy. A related problem, inducible laryngeal obstruction, is when the voice box narrows at the wrong moment, causing sudden difficulty breathing in. These are common, frequently mistaken for asthma, and very treatable. Breathing retraining with a physiotherapist or speech pathologist is the mainstay, restoring a calm, efficient pattern. This page explains these conditions and how they are managed.
Dysfunctional breathing (DB) encompasses a heterogeneous group of disorders of breathing pattern, mechanics, and laryngeal function that produce symptoms in the absence of, or out of proportion to, identifiable cardiorespiratory pathology. It frequently coexists with — and is mistaken for — asthma, anxiety, and cardiac disease. Cardiorespiratory physiotherapy is the primary treatment modality.
Definition
Dysfunctional breathing refers to a chronic alteration in breathing pattern, depth or rate that produces respiratory and non-respiratory symptoms. It includes hyperventilation syndrome, thoracic-dominant breathing, periodic deep sighing, breath-holding, mouth breathing, and inducible laryngeal obstruction (ILO; formerly called vocal cord dysfunction). ILO is now distinguished into exercise-induced ILO (EILO) and irritant-/stress-induced ILO.1
Pathophysiology
In hyperventilation syndrome and breathing pattern disorders, sustained low arterial CO₂ causes cerebral and peripheral vasoconstriction, reduced ionised calcium, smooth muscle effects, and a range of somatic symptoms. In ILO, paradoxical adduction of the vocal cords or supraglottic structures during inspiration causes upper airway obstruction with stridor and dyspnoea.
Common contributors include extrathoracic airway hyperresponsiveness, post-nasal drip, gastro-oesophageal and laryngopharyngeal reflux, anxiety, prior intubation, and learned breathing pattern responses to stressors.
Co-morbidities
Asthma (frequently coexists; DB is a major contributor to "difficult-to-treat asthma"), anxiety and panic disorder, post-traumatic stress, chronic rhinosinusitis, GORD and laryngopharyngeal reflux, fibromyalgia, hypermobility spectrum disorder, post-COVID-19 syndrome, and POTS.
Prevalence
DB is present in up to 30% of asthma patients and 5–10% of the general population. ILO has been identified in approximately 5–10% of adolescent and young adult athletes evaluated for exertional dyspnoea.2
Symptoms
Breathlessness disproportionate to exertion or pulmonary findings, air hunger, chest tightness, throat tightness or stridor on exertion, lightheadedness, paraesthesiae (perioral, fingertips), palpitations, fatigue, sighing or yawning, and exercise limitation. Symptoms often fluctuate with stress, posture, and environment.
Diagnosis
Why diagnosis matters
DB and ILO are frequently misdiagnosed as poorly controlled asthma, with patients escalated through inhaled and oral corticosteroids, biologics, and emergency presentations before correct diagnosis. Accurate diagnosis avoids inappropriate treatment and enables targeted, effective physiotherapy.
Clinical assessment
Validated tools include the Nijmegen Questionnaire (hyperventilation syndrome), Self-Evaluation of Breathing Questionnaire (SEBQ), and the Breathing Pattern Assessment Tool. Examination includes resting respiratory rate, ratio of thoracic to abdominal excursion, breath-holding time, presence of sighing/yawning, and breathing during conversation.3,4
Exclusion of organic disease
Spirometry with bronchodilator reversibility, FeNO, peak flow, and where appropriate bronchial provocation testing (mannitol, methacholine, eucapnic voluntary hyperventilation). Exercise testing with concurrent spirometry, flow-volume loops and laryngeal observation differentiates exercise-induced bronchoconstriction from EILO.
Definitive ILO diagnosis
Continuous laryngoscopy during exercise (CLE) directly visualises the larynx during symptomatic exercise and is the reference standard for EILO. Awake flexible nasendoscopy with provocation may identify irritant- or stress-induced ILO. These investigations are available at a small number of Australian centres.5
Investigation of contributors
Assessment for and treatment of GORD/LPR, chronic rhinosinusitis, nasal obstruction, anxiety disorder, sleep-disordered breathing, and post-viral syndromes.
Management
Education and reassurance
Patients are often disbelieved or labelled as anxious before diagnosis. Clear, validating explanation of the physiology — that breathing is a learned motor skill, and that pattern disturbances are physiological and treatable — is therapeutic in itself.
Breathing retraining
Structured breathing retraining is the cornerstone of treatment. Components include nasal breathing, slow exhalation, diaphragmatic engagement, breath rate normalisation, pause restoration, posture, and graded loading. The Papworth and Buteyko methods, and contemporary physiotherapy-led programmes (e.g. BradCliff, Papworth, Buteyko), have evidence of benefit.6,7,8,9
ILO-specific therapy
Speech pathology and physiotherapy in combination — laryngeal relaxation techniques, throat-clearing reduction, breath-driven phonation, and rescue manoeuvres (e.g. "sniff in, blow out" for EILO). Treatment of contributory laryngeal irritants (LPR, post-nasal drip). Anticholinergic inhalers and inspiratory muscle training have selected roles.
Treatment of contributors
Optimisation of asthma treatment, GORD/LPR management, chronic rhinosinusitis treatment, anxiety and panic disorder management, and exercise rehabilitation for deconditioning.
Multidisciplinary care
Best outcomes are achieved in multidisciplinary clinics with respiratory medicine, ENT, speech pathology, physiotherapy, and clinical psychology input. Referral pathways for severe or refractory cases should be identified locally.
Medications
Adjunctive medications
There is no specific pharmacotherapy for DB. Inhaled bronchodilators may be used pre-emptively for confirmed coexisting EIB. Treatment of contributors (proton pump inhibitors for LPR, intranasal corticosteroids, anxiety pharmacotherapy where clinically indicated, anticholinergic nasal spray for selected ILO phenotypes) supports overall treatment.
Multi-system manifestations
Anxiety, panic, and post-traumatic stress
Bidirectional relationship — anxiety and panic provoke and are provoked by DB. Joint psychological and physiotherapy input is often most effective.
Asthma "difficulty"
DB is a leading cause of apparently uncontrolled asthma despite escalating treatment. Recognition and treatment of DB often allows reduction of asthma pharmacotherapy.
Post-viral and post-COVID syndromes
Disordered breathing pattern is a prominent feature of long COVID and other post-viral syndromes and contributes substantially to dyspnoea and exercise intolerance in these populations.10
Reflux and laryngeal irritation
LPR and chronic throat clearing perpetuate ILO and breathing pattern disorders. Targeted reflux treatment, hydration, and behavioural changes (reduced throat clearing, voice rest where appropriate) support physiotherapy gains.
Living with breathing pattern disorders
Self-management
Daily breathing retraining practice (typically 5–10 minutes twice daily), structured rescue plans for symptom flares, identification of personal triggers (perfume, cold air, exercise intensity, stress), and consistent nasal breathing during exercise.
Exercise and return to sport
Graded return to exercise with breathing-pattern monitoring, warm-up emphasising nasal and slow breathing, and management of contributory factors (rhinitis, asthma, deconditioning).
Prognosis
Most patients respond well to structured breathing retraining and treatment of contributors. Relapse during periods of stress is common; brief refresher sessions are usually sufficient.
Role of the physiotherapist
Physiotherapy is the primary treatment for breathing pattern disorders. The physiotherapist assesses the breathing pattern and delivers breathing retraining — restoring nose, diaphragmatic and appropriately paced breathing — with education, and coordinates with speech pathology where there is vocal-cord dysfunction.
Warning signs
Part 1 · References
- Boulding R, Stacey R, Niven R, Fowler SJ. Dysfunctional breathing: a review of the literature and proposal for classification. Eur Respir Rev 2016;25(141):287–294.
- Thomas M, McKinley RK, Freeman E, Foy C. Prevalence of dysfunctional breathing in patients treated for asthma in primary care: cross sectional survey. BMJ 2001;322(7294):1098–1100.
- van Dixhoorn J, Folgering H. The Nijmegen Questionnaire and dysfunctional breathing. ERJ Open Res 2015;1(1):00001-2015.
- Todd S, Walsted ES, Grillo L, Livingston R, Menzies-Gow A, Hull JH. Novel assessment tool to detect breathing pattern disorder in patients with refractory asthma. Respirology 2018;23(3):284–290.
- Halvorsen T, Walsted ES, Bucca C, et al. Inducible laryngeal obstruction: an official joint European Respiratory Society and European Laryngological Society statement. Eur Respir J 2017;50(3):1602221.
- Bruton A, Lee A, Yardley L, et al. Physiotherapy breathing retraining for asthma: a randomised controlled trial. Lancet Respir Med 2018;6(1):19–28.
- Holloway EA, West RJ. Integrated breathing and relaxation training (the Papworth method) for adults with asthma in primary care: a randomised controlled trial. Thorax 2007;62(12):1039–1042.
- Santino TA, Chaves GSS, Freitas DA, Fregonezi GAF, Mendonça KMPP. Breathing exercises for adults with asthma. Cochrane Database Syst Rev 2020;(3):CD001277.
- Jones M, Harvey A, Marston L, O'Connell NE. Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults. Cochrane Database Syst Rev 2013;(5):CD009041.
- Singh SJ, Baldwin MM, Daynes E, et al. Respiratory sequelae of COVID-19: pulmonary and extrapulmonary origins, and approaches to clinical care and rehabilitation. Lancet Respir Med 2023;11(8):709–725.
References are numbered in citation order (Vancouver/BMJ style) and were current at the time of writing. Guidelines are living documents — verify against the latest version before clinical use.
More than one of our services applies here, and which combination suits you depends on what your assessment shows.
Clinical evidence
Part 1 covers the same condition without the technical detail. What follows is the evidence base behind it, written for clinicians — the literature, the reasoning and the gaps.
For clinicians: this summary supports clinical reasoning and is not a protocol. Check current guidelines and local policy before applying it, and read it alongside the key references and guidelines directory.
Framing. Dysfunctional breathing is a heterogeneous group of abnormal breathing patterns — hyperventilation, periodic deep sighing, thoracic-dominant and irregular patterns, breath-holding, and inducible laryngeal obstruction — that cause symptoms independent of, or superimposed on, organic disease.1 It is common: roughly a third of adults treated for asthma in primary care screen positive on the Nijmegen questionnaire, and treating the pattern rather than escalating inhaled therapy is often the correct move.2,3
What the evidence supports
- Breathing exercises improve quality of life and symptoms in asthma and reduce hyperventilation symptoms, with the Cochrane review reporting improvement in quality of life and hyperventilation scores while noting low-to-moderate certainty and heterogeneous protocols.4
- The Papworth method (integrated breathing and relaxation training) reduced respiratory symptoms and improved quality of life in a randomised controlled trial in asthma.5
- Physiotherapist-delivered and self-guided breathing retraining both improved asthma-related quality of life in a large randomised trial, with a DVD-plus-booklet programme nearly as effective as face-to-face sessions — relevant to access and to blended delivery.6
- Evidence for hyperventilation syndrome as a standalone diagnosis is thin: the dedicated Cochrane review found insufficient randomised evidence to determine the effect of breathing exercises, so practice rests on physiological reasoning and the asthma-overlap trials.7
- Inducible laryngeal obstruction is a distinct, frequently misdiagnosed entity requiring laryngoscopic confirmation and speech-pathology or specialist physiotherapy input, not bronchodilator escalation.8
Assessment
- Screen with a validated tool — the Nijmegen Questionnaire (positive at > 23) and the Breathing Pattern Assessment Tool — and combine it with observed pattern, rate, ratio, upper-chest dominance, sighing and breath-hold time.3,9
- Exclude and quantify organic disease first: spirometry with reversibility, bronchial provocation where indicated, oximetry on exertion, and consideration of cardiac disease, anaemia, pulmonary embolism and thyroid disease.1
- Post-viral and long-COVID breathlessness frequently includes a breathing pattern component, which is treatable even when the underlying illness is not.10
Physiotherapy implications
- This is a physiotherapy-led diagnosis and a physiotherapy-led treatment — nasal, diaphragmatic, low-and-slow breathing retraining, restoration of the expiratory phase, reduction of upper-chest and accessory-muscle use, then integration into speech, exertion and sleep.
- Do not chase symptoms with medication. A patient whose asthma is "uncontrolled" with normal spirometry, normal fractional exhaled nitric oxide and a high Nijmegen score usually needs retraining, not a step-up.2,3
- Treat the overlap honestly: dysfunctional breathing coexists with asthma, COPD, obesity and anxiety — retraining does not replace disease-modifying therapy and must not be presented as a reason to stop preventer treatment.
- Address the fear–avoidance loop with graded exposure to exertion, education on the physiology of hyperventilation symptoms (tingling, dizziness, chest tightness), and rescue techniques the patient can use in the moment.
- Refer on for laryngoscopy where stridor, inspiratory difficulty at the throat or exercise-onset symptoms suggest inducible laryngeal obstruction, and for psychological support where panic dominates.8
Clinical reasoning
- Symptoms disproportionate to objective findings, variable and non-exertional, with prominent light-headedness, paraesthesia and sighing, point to pattern rather than pathology.
- Inspiratory difficulty localised to the throat suggests laryngeal origin; expiratory difficulty with wheeze suggests bronchial.8
- A normal saturation during severe subjective breathlessness is informative and can be used therapeutically as reassurance.
- Improvement should be measurable — re-score the questionnaire and re-test function rather than relying on impression.9
Evidence gaps
- No agreed diagnostic criteria or classification system, which limits both trials and prevalence estimates.1
- Optimal content, dose and duration of retraining are undefined, and trial protocols differ substantially.4
- Almost no randomised evidence exists for dysfunctional breathing outside asthma populations.7
- Long-term durability of retraining, and who relapses, has not been established.
References for the clinical evidence summary
- Boulding R, Stacey R, Niven R, Fowler SJ. Dysfunctional breathing: a review of the literature and proposal for classification. Eur Respir Rev 2016;25(141):287–294.
- Thomas M, McKinley RK, Freeman E, Foy C. Prevalence of dysfunctional breathing in patients treated for asthma in primary care: cross sectional survey. BMJ 2001;322(7294):1098–1100.
- van Dixhoorn J, Folgering H. The Nijmegen Questionnaire and dysfunctional breathing. ERJ Open Res 2015;1(1):00001-2015.
- Santino TA, Chaves GSS, Freitas DA, Fregonezi GAF, Mendonça KMPP. Breathing exercises for adults with asthma. Cochrane Database Syst Rev 2020;(3):CD001277.
- Holloway EA, West RJ. Integrated breathing and relaxation training (the Papworth method) for adults with asthma in primary care: a randomised controlled trial. Thorax 2007;62(12):1039–1042.
- Bruton A, Lee A, Yardley L, et al. Physiotherapy breathing retraining for asthma: a randomised controlled trial. Lancet Respir Med 2018;6(1):19–28.
- Jones M, Harvey A, Marston L, O'Connell NE. Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults. Cochrane Database Syst Rev 2013;(5):CD009041.
- Halvorsen T, Walsted ES, Bucca C, et al. Inducible laryngeal obstruction: an official joint European Respiratory Society and European Laryngological Society statement. Eur Respir J 2017;50(3):1602221.
- Todd S, Walsted ES, Grillo L, Livingston R, Menzies-Gow A, Hull JH. Novel assessment tool to detect breathing pattern disorder in patients with refractory asthma. Respirology 2018;23(3):284–290.
- Singh SJ, Baldwin MM, Daynes E, et al. Respiratory sequelae of COVID-19: pulmonary and extrapulmonary origins, and approaches to clinical care and rehabilitation. Lancet Respir Med 2023;11(8):709–725.
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