Functional Cough and Upper-Airway Symptoms

Refers to:

• persistent functional or habitual cough;
• recurrent throat clearing; and
• an assessed functional laryngeal, upper-airway or breathing presentation within this clinical scope.

Scope boundary: This category does not include generic breathlessness or every chronic cough. Swallow-related coughing belongs in a swallowing and airway-safety assessment, and respiratory, cardiac, allergic, infectious, medication-related and structural causes still require appropriate evaluation.

Featured technique: Multidisciplinary history and laryngeal-respiratory assessment across relevant conditions.
Diagnostic method: Identify a positive symptom pattern while assessing respiratory, laryngeal, medication-related and other causes; there is no single decisive bedside sign.
Media needed: Speech-pathology or laryngoscopy process demonstration without deliberately provoking symptoms.

Diagnostic techniques at a glance

Motor and vocal tic-like symptoms

Diagnostic techniques at a glance

These brief entries describe signs, observations, criteria and investigations clinicians may consider. They are not a checklist of tests everyone needs. Evidence and limitations differ for each entry; a positive sign must fit the whole clinical picture, including possible coexisting disease.

The longer explanations already on this page remain below. Individual technique pages will be developed and reviewed separately.

Tic-cough assessment

The clinician considers suppressibility, distractibility, suggestibility, variability and any preceding urge after appropriate cough assessment. CHEST recommendations use a tic framework, supported by low-quality evidence. These features do not automatically classify every cough as an FND symptom. [2]

Somatic cough syndrome criteria

This formulation requires a comprehensive medical assessment and applicable somatic-symptom criteria. It is distinct from tic cough and cannot be diagnosed merely because tests are normal. The guideline found no validated diagnostic criteria for the older cough labels. [2]

Cough sound and sleep pattern

A barking or honking quality and absence during sleep have been historically emphasized. CHEST advises against using these to diagnose or exclude the syndrome. They are history observations, not reliable positive signs. [2]

Task and attention comparisons

Changes during conversation, breathing or another appropriate activity can characterize the cough. They may inform specialist assessment but lack standalone FND accuracy evidence. Avoid repetitive provocation, especially when discussion itself triggers symptoms. [1][2]

Laryngoscopy during typical airway symptoms

Visualization can document inducible laryngeal narrowing. Normal examination between episodes may miss it. This supports inducible laryngeal obstruction when the pattern matches; it does not by itself establish a neurological FND diagnosis. [3]

Continuous laryngoscopy during exercise

For exertional symptoms, a specialist may observe the larynx through a monitored exercise challenge. The test addresses exercise-induced laryngeal obstruction, not FND in general. Suitability and safety determine whether provocation is justified. [3]

Respiratory and other differential testing

History, examination and selected investigations assess asthma, infection, reflux, medication effects and other causes. These tests answer specific differential questions; normal results do not positively diagnose functional cough or airway symptoms. [2][3]

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For the Person With FND
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For the Person With FND

Functional cough and related upper-airway symptoms may include a repeated cough, throat clearing, unusual breathing or laryngeal symptoms that are not fully explained by structural disease. This page follows a speech-and-language-therapy consensus category; it does not claim that every persistent cough is FND.

The assessment looks at the whole pattern: onset, triggers, sound, timing, breathing, voice, speaking, sleep and what happens during different tasks. Depending on the symptom, respiratory testing, ear-nose-throat examination or laryngoscopy may be needed. Asthma, infection, reflux, medication effects, inducible laryngeal obstruction and other causes must be considered. [1]

There is no single cough sound or response to distraction that confirms a functional diagnosis. New breathing difficulty, blue colour, chest pain, coughing blood or another emergency feature requires urgent care.

Episodes, bouts and persistent symptoms

Functional cough, throat clearing or upper-airway symptoms may occur in discrete bouts, be strongly linked to particular situations, recur through the day, or remain persistent. An episode can also leave throat irritation or fatigue after the most obvious coughing or breathing change has settled. Duration and trigger pattern help describe the problem but do not establish its cause.

At the onset of a familiar mild episode, use only the breathing or competing response already selected during respiratory or speech-language assessment and reduce known irritants when practical. Do not force breath-holding or suppress a serious airway warning. Severe breathlessness, blue/grey colour, chest pain, coughing blood, reduced consciousness or a substantially new pattern requires urgent care.

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For the Person With FND
For Family, Friends, and Other Supporters
For Clinicians and the Care Team
Research and Sources —

For Family, Friends, and Other Supporters

Do not expose the person to scents, smoke, exercise or stressful situations to see whether coughing or breathing changes. Follow the respiratory or speech-therapy plan they have been given. During serious breathing difficulty, prioritize emergency care rather than recording.

It can help to note the context, duration, sound, voice changes and recovery of spontaneous episodes, including whether the symptom occurs during sleep. These observations support clinical history but do not settle the diagnosis.

When a familiar episode begins

Reduce avoidable irritants and extra talking, and use one agreed cue rather than coaching several breathing steps at once. Do not withhold prescribed respiratory treatment because a functional component has been diagnosed. If the person cannot speak, has severe breathing difficulty or develops another emergency feature, follow emergency guidance rather than continuing a functional symptom technique.

A short cough bout and a flare lasting much longer should both be described accurately. Note what happened before the episode, how long the active symptoms and recovery lasted, and whether the pattern was typical.

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For the Person With FND
For Family, Friends, and Other Supporters
For Clinicians and the Care Team
Research and Sources —

For Clinicians and the Care Team

Episodic and prolonged presentations

Document whether the cough or upper-airway symptom is episodic, trigger-linked, recurrent or persistent. Record episode duration, frequency, earliest urge, respiratory and voice changes, sleep pattern, environmental context, recovery and response to prescribed respiratory treatment. Fluctuation and suppressibility are not sufficient to diagnose a functional disorder.

When the phenotype is established, provide a short onset plan using one or two assessed competing responses or efficient-breathing cues and explicit emergency thresholds. Do not deliberately provoke severe respiratory symptoms to demonstrate the diagnosis, and do not let the functional formulation obscure asthma, infection, reflux, medication effects, inducible laryngeal obstruction or other comorbidity.

Technique outline: cough and upper-airway pattern assessment

1. Characterize onset, frequency, sound, known triggers, night-time pattern, voice change, breathing sensation, medication exposure and prior respiratory or laryngeal disease.
2. Observe quiet breathing, spontaneous speech and any naturally occurring cough or throat clearing. Do not begin by provoking the symptom.
3. Perform respiratory, voice and neurological examination appropriate to the complaint. Refer for ENT, respiratory, allergy or gastroenterology assessment when indicated.
4. Use laryngoscopy, pulmonary-function testing or a clinically indicated supervised challenge to answer a defined question. A public media demonstration is not a reason to perform a challenge.
5. Compare the symptom across ordinary tasks and therapeutic strategies selected by a trained clinician. Look for a reproducible positive pattern, not a single moment of suppression.
6. Consider asthma, infection, reflux, medication-related cough, tic disorders, inducible laryngeal obstruction, structural laryngeal disease and other relevant alternatives or comorbidities.
7. Explain the formulation and provide a symptom-management and follow-up plan. Avoid implying that the person should simply suppress the cough.

Media contributor brief

Prefer a process demonstration using a clinician and healthy volunteer:

1. The history domains shown as on-screen prompts.
2. Comfortable posture and quiet breathing observation.
3. A larynx diagram or de-identified laryngoscopy excerpt explaining what is being assessed.
4. One clinician-selected breathing or cough-management strategy, labelled as treatment rather than diagnosis.

Do not use strong odours, smoke, cold air, exercise or emotional provocation to create symptoms. If a spontaneous clinical episode is included, retain the context and obtain specific consent. Provide captions and a transcript that describe sounds without requiring the audience to hear them.

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Recovery reading: Ten detailed cough and upper-airway recovery pages, with individualized safety limits and separate guidance for the person, supporters and clinicians.

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For the Person With FND
For Family, Friends, and Other Supporters
For Clinicians and the Care Team
Research and Sources —

Research and Sources

Source for this boundary: Malaty IA, Anderson S, Bennett SM, et al. Diagnosis and management of functional tic-like phenomena. Journal of Clinical Medicine. 2022;11(21):6470. FND-CIT-0110; source.

Evidence notes

• The international consensus recommendations place functional cough and related upper-airway symptoms within speech-and-language-therapy practice while emphasizing appropriate differential assessment and treatment. [1]

Citation table

Citation	Full citation
[1]	Baker J, Barnett C, Cavalli L, et al. Management of functional communication, swallowing, cough and related disorders: consensus recommendations for speech and language therapy. Journal of Neurology, Neurosurgery & Psychiatry. 2021;92(10):1112–1125. FND-CIT-0025. https://doi.org/10.1136/jnnp-2021-326767

[2]	Vertigan AE, Murad MH, Pringsheim T, et al. Somatic Cough Syndrome (Previously Referred to as Psychogenic Cough) and Tic Cough (Previously Referred to as Habit Cough) in Adults and Children: CHEST Guideline and Expert Panel Report. Chest. 2015;148(1):24-31. DOI. PMID: 25856777. FND-CIT-0129.
[3]	Haines J, Esposito K, Slinger C, et al. UK consensus statement on the diagnosis of inducible laryngeal obstruction in light of the COVID-19 pandemic. Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology. 2020;50(12):1287-1293. DOI. PMID: 33034142. FND-CIT-0147.

Technique outline created: August 24, 2026 · Speech-language-pathology, ENT and respiratory review pending

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For the Person With FND
For Family, Friends, and Other Supporters
For Clinicians and the Care Team
Research and Sources —