Specialist assessment of persistent and chronic cough

Why Seeing a Respiratory Physician for Your Cough Is Key

A persistent cough can arise from the lungs, airways, nose, throat, reflux, medication or a combination of factors. A respiratory physician is often well placed to provide the initial specialist assessment, exclude important lung disease and coordinate further input from ENT, gastroenterology or speech and language therapy when needed.

Chronic cough assessment
Chest imaging
Spirometry and FeNO
Cough hypersensitivity
ENT collaboration
Reflux assessment
Bronchoscopy
Multidisciplinary care

Start with a broad respiratory assessment

A respiratory physician can investigate common airway causes while also checking for infection, bronchiectasis, interstitial lung disease, medication effects and more serious pathology.

Not every patient needs every test

Chest CT, bronchoscopy, reflux testing and ENT procedures should be selected according to the history, examination, initial investigations and clinical risk.

A persistent cough deserves a structured assessment

A cough is a protective reflex that helps clear the airways. However, when it persists, becomes intrusive or is associated with other symptoms, it may indicate an underlying respiratory, upper-airway, gastrointestinal or neurological process.

Many acute coughs follow viral infections and improve without specialist treatment. In adults, a cough lasting more than eight weeks is generally described as chronic, although earlier assessment may be appropriate when symptoms are severe or warning signs are present.

Persistent cough can affect sleep, work, conversation, exercise, social confidence and continence. Severe coughing may also cause chest pain, headache, dizziness, vomiting, rib injury or urinary leakage.

A symptom with many possible causes

Chronic cough may reflect one condition, several overlapping conditions or a sensitised cough reflex that persists after the original trigger has resolved. Read more about specialist assessment of persistent and chronic cough .

The central role of the respiratory physician

Respiratory physicians specialise in disorders of the lungs, airways, breathing and oxygen exchange. This gives them a broad perspective on both common and less obvious causes of persistent cough.

Specialist airway knowledge

Assessment covers asthma, eosinophilic airway disease, COPD, bronchiectasis, infection, mucus disorders and airway obstruction.

Assessment of lung tissue

Respiratory physicians also consider interstitial lung disease, organising pneumonia, sarcoidosis and other conditions that can present with cough.

Recognition of serious disease

Risk assessment considers lung cancer, tuberculosis, significant infection, pulmonary fibrosis and other important diagnoses.

Cough hypersensitivity expertise

Chronic cough can result from an over-responsive cough reflex, often triggered by talking, perfume, cold air, laughter or minor throat sensations. Learn more about cough hypersensitivity syndrome .

Interpretation of respiratory tests

Lung-function tests, CT findings, airway inflammation markers and bronchoscopy results are interpreted within the whole clinical picture.

Coordination across specialties

When the cough involves the nose, larynx, swallowing or reflux, respiratory care can be coordinated with other appropriate specialists.

Persistent cough: when should you see a specialist?

Consultant respiratory guidance

When a cough should prompt specialist review

This video explains when a persistent cough may need a more detailed respiratory assessment and why the duration, character and associated symptoms all matter.

A chronic cough should not automatically be assumed to be asthma, reflux or a lingering infection. A systematic assessment helps avoid repeated empirical treatment without a clear diagnosis.

The vertical video frame remains fully responsive on tablets and mobile devices while preserving the original aspect ratio.

What happens during a respiratory cough assessment?

A careful history is often one of the most valuable parts of the consultation. The pattern and triggers of a cough can help direct the investigation.

Clarify the duration and pattern The physician asks when the cough began, whether it is dry or productive, and whether it varies by time, position, season or activity.
Identify triggers Talking, laughing, eating, exercise, cold air, perfume, lying flat and environmental exposure may provide useful diagnostic clues.
Review associated symptoms Wheeze, breathlessness, sputum, fever, nasal symptoms, heartburn, swallowing difficulty, hoarseness, chest pain, weight loss and haemoptysis are considered.
Review medication ACE inhibitors and other medicines may contribute to cough. Inhaler technique and previous treatment response are also assessed.
Assess smoking and environmental exposure Tobacco, vaping, occupational dust, fumes, mould, allergens and pollution can be clinically relevant.
Examine the respiratory system Examination may identify wheeze, crackles, reduced air entry, upper-airway noise or signs suggesting another systemic disease.

A previous treatment failure is useful information

Lack of response to an inhaler, acid suppression or antibiotics does not simply mean that the cough is untreatable. It may mean that the diagnosis, dose, technique, treatment duration or target mechanism needs reconsideration.

Respiratory investigations for persistent cough

Investigations should answer a clinical question. A respiratory physician can select tests according to symptoms, risk factors and findings rather than ordering every available investigation. Read more about spirometry, FeNO and specialist lung-function testing .

Chest X-ray

Often forms part of the initial assessment of chronic cough and can identify pneumonia, a mass, fibrosis or another significant abnormality.

CT scan

May be used when bronchiectasis, lung cancer, interstitial lung disease or another structural abnormality is suspected.

Selective use

CT is not normally required for every patient with a normal examination and chest X-ray. Radiation exposure and incidental findings must be considered.

Spirometry

Measures airflow and can identify obstructive physiology associated with asthma or COPD.

Bronchodilator testing

Assesses whether airflow obstruction improves after an inhaled bronchodilator.

FeNO and eosinophils

May support assessment for type-2 or eosinophilic airway inflammation and help guide corticosteroid treatment.

Sputum culture

Helps identify bacterial infection and select appropriate antibiotics when sputum is persistently productive or purulent.

Special cultures

Mycobacterial or fungal testing may be appropriate when the history, imaging or immune status raises concern.

Airway clearance

A productive cough may require physiotherapy assessment rather than treatment aimed solely at suppressing the cough.

What it examines

A flexible camera is passed into the airways to inspect the bronchial tree and obtain samples where needed.

When it may help

Possible indications include suspected airway obstruction, foreign body, unexplained bleeding, abnormal imaging or persistent infection.

Not routine

Bronchoscopy is not a standard investigation for every chronic cough and should be performed for a specific diagnostic reason.

Respiratory causes a physician may investigate

Asthma, COPD, bronchiectasis and other airway diseases can all present with cough. The clinical pattern, examination, imaging and physiological tests help distinguish between them.

Asthma

Cough may occur with wheeze and breathlessness or may be a prominent symptom when other asthma features are subtle.

Eosinophilic bronchitis

Eosinophilic airway inflammation may cause corticosteroid- responsive cough without the variable airflow obstruction expected in asthma.

Bronchiectasis

A chronic productive cough, recurrent infections, haemoptysis or persistent sputum may justify CT imaging and microbiological assessment.

COPD

Smoking or exposure history, airflow obstruction, sputum and breathlessness may suggest chronic obstructive pulmonary disease.

Post-infectious cough

Airway irritation can persist after a viral illness, although prolonged or worsening symptoms may require investigation for another cause. Read more about persistent respiratory symptoms after a viral infection .

Interstitial lung disease

Dry cough with progressive breathlessness, crackles or relevant autoimmune and occupational history may require lung-function testing and CT.

Infection

Pneumonia, tuberculosis, pertussis and other infections may cause persistent cough in the appropriate clinical context.

Lung cancer

Risk is assessed using age, smoking history, haemoptysis, weight loss, chest pain, voice change and imaging findings.

Understanding cough hypersensitivity syndrome

In many people with chronic cough, the cough reflex becomes excessively sensitive. Harmless sensations or low-level stimuli can then trigger repeated coughing that would not affect most people.

Common triggers include perfume, cleaning products, cold air, talking, laughter, eating, exercise and a minor sensation in the throat. Patients may describe a tickle, irritation or an irresistible urge to cough.

Cough hypersensitivity can coexist with asthma, rhinitis, reflux or another lung condition. Treating an associated condition may help, but some patients continue coughing because the neural reflex remains sensitised.

Non-pharmacological and specialist cough treatment

Appropriately trained speech and language therapists or respiratory physiotherapists can teach cough-suppression, breathing, laryngeal-relaxation and trigger-management techniques. This is active clinical treatment rather than an implication that the cough is imaginary.

For selected adults whose cough remains refractory or unexplained after structured assessment and treatment of contributing conditions, a respiratory cough specialist may also discuss gefapixent for chronic cough hypersensitivity .

When other specialists may contribute

A respiratory physician does not replace other specialists. Instead, respiratory assessment can clarify when another discipline is likely to add value and ensure that care remains coordinated. This is particularly relevant when reflux, aspiration or swallowing problems may be affecting the lungs .

ENT review may help when there is chronic rhinosinusitis, nasal obstruction, voice change, suspected vocal-cord dysfunction, laryngeal symptoms or another structural upper- airway concern.

Gastroenterology may be appropriate for troublesome reflux, swallowing symptoms or suspected oesophageal disease, particularly when specialised testing is required.

Specialist therapy can support cough control, laryngeal function, voice, breathing patterns and swallowing when these contribute to symptoms.

Multidisciplinary rather than fragmented

The objective is not to send every patient through several unrelated consultations. It is to identify the most plausible mechanisms and involve the right specialist at the right stage.

Why coordinated specialist care matters

A central clinical overview

Results from respiratory, ENT, gastrointestinal and speech- therapy assessments can be interpreted together rather than as separate opinions.

Fewer repeated investigations

A structured pathway can reduce unnecessary repetition of imaging, empirical medication and specialist consultations.

More targeted treatment trials

Treatment can be linked to a suspected mechanism with a clear duration, outcome and review point.

Recognition of multiple causes

Asthma, rhinitis, reflux and cough hypersensitivity may coexist, so improvement may require more than one carefully selected intervention.

Which specialist might be appropriate?

Clinical presentation	Potential starting point	Possible additional input
Persistent unexplained cough, wheeze, sputum or breathlessness	Respiratory physician	Chest physiotherapy or speech therapy according to findings
Chronic cough with recurrent chest infections or purulent sputum	Respiratory physician	Respiratory physiotherapy
Marked nasal obstruction, sinus symptoms or persistent hoarseness	Respiratory physician or ENT	Allergy specialist
Swallowing difficulty, choking or cough during meals	Medical assessment with swallowing review	Speech and language therapy, ENT or gastroenterology
Prominent reflux symptoms with persistent cough	Respiratory assessment	Gastroenterology when specialised oesophageal evaluation is needed or ENT for persistent throat symptoms
Triggered cough with throat sensations and normal initial tests	Respiratory cough assessment	Specialist cough-control therapy or laryngeal assessment

The best starting point depends on the clinical picture

A respiratory physician is often a logical initial specialist when the cause is uncertain or a lung and airway disorder must be excluded. A dominant nasal, voice, swallowing or gastrointestinal presentation may justify direct assessment by another appropriate service.

When to consider seeing a respiratory physician

Cough lasting more than eight weeks

Chronic cough generally warrants structured evaluation, particularly when initial treatment has not resolved it.

Recurrent or productive cough

Persistent sputum, repeated antibiotic courses or recurrent chest infections may suggest bronchiectasis or another mucus- clearance disorder.

Breathlessness or wheeze

Lung-function testing and airway-inflammation assessment may help identify asthma, COPD or another respiratory problem.

Abnormal chest imaging

Nodules, infiltrates, bronchiectasis, fibrosis or airway abnormalities often require respiratory interpretation and follow-up.

Failed empirical treatment

Repeated inhalers, antibiotics or reflux treatment without lasting benefit should prompt reconsideration of the diagnosis.

Significant impact on daily life

Sleep disruption, vomiting, incontinence, social embarrassment or inability to work are valid reasons to seek further help.

Warning signs that need prompt medical assessment

Do not wait for a routine cough appointment when seriously unwell

Seek urgent medical assessment for:

Coughing up significant amounts of blood
Severe or rapidly worsening breathlessness
Blue or grey lips, collapse or confusion
Chest pain with breathlessness, sweating or fainting
Persistent fever with significant deterioration
Unexplained weight loss or drenching night sweats
New difficulty swallowing or repeated choking
A new cough in someone with substantial immune suppression

Call 999 for severe breathing difficulty, collapse, heavy haemoptysis or another immediately life-threatening symptom.

Conclusion

A persistent cough can arise from the lungs, airways, nose, throat, oesophagus, medication or an overly sensitive cough reflex. Several mechanisms may coexist.

A respiratory physician is often well placed to provide the initial specialist assessment because they can investigate airway inflammation, infection, mucus disorders, structural lung disease and serious respiratory pathology.

The evaluation commonly begins with a detailed history, examination, chest X-ray and spirometry. FeNO, eosinophils, sputum testing, CT or bronchoscopy may be added where clinically appropriate rather than used automatically.

Chronic rhinosinusitis, laryngeal dysfunction, swallowing problems and reflux may require ENT, gastroenterology or specialist speech and language therapy. Coordinated care helps ensure that these contributions form one coherent diagnostic and treatment plan.

If your cough is lingering, disrupting daily life or has not responded to previous treatment, a structured respiratory cough assessment can help identify what is driving it and which treatments are most likely to help.

Frequently asked questions

When is a cough considered chronic?

In adults, a cough lasting more than eight weeks is generally described as chronic. Earlier assessment may be needed when warning signs, significant breathlessness or substantial clinical risk are present.

Should I see an ENT doctor or a respiratory physician first?

A respiratory physician is often a logical starting point for an unexplained persistent cough, particularly when lung or airway disease needs to be excluded, or the cause is multi-factorial.

Can reflux cause a cough without heartburn?

Reflux and oesophageal dysfunction can be associated with cough, but cough without typical reflux symptoms should not automatically be attributed to acid reflux. Other respiratory and laryngeal causes may need evaluation.

Will I need a CT scan?

Not necessarily. CT is usually reserved for a specific clinical concern, such as bronchiectasis, interstitial lung disease, lung cancer risk, haemoptysis or an abnormal chest X-ray.

Is bronchoscopy routinely used for chronic cough?

No. Bronchoscopy is normally used selectively when there is a suspected airway lesion, foreign body, unexplained bleeding, persistent infection or another specific indication.

What is cough hypersensitivity?

It describes an over-responsive cough reflex in which minor stimuli such as talking, perfume, cold air or a throat tickle trigger excessive coughing.

Can speech and language therapy help a cough?

Yes. Appropriately trained therapists can teach cough-control, breathing and laryngeal-relaxation techniques for refractory cough and cough hypersensitivity.

Can asthma cause cough without obvious wheezing?

Yes. Cough may be a prominent asthma symptom even when wheeze is not obvious. Spirometry, bronchodilator testing, FeNO and eosinophils may help assess this possibility.

Why has my cough continued after a viral infection?

Viral infection can leave the airways and cough reflex temporarily sensitised. Persistent symptoms may also uncover asthma, rhinitis, reflux, infection or another respiratory condition.

Can more than one condition cause the same cough?

Yes. Asthma, rhinitis, reflux and cough hypersensitivity can overlap. Treatment may therefore need to address more than one mechanism.

References and further information

British Thoracic Society. Clinical Statement on Chronic Cough in Adults. View the BTS clinical statement
Parker SM, Smith JA, Birring SS, et al. British Thoracic Society Clinical Statement on chronic cough in adults. Thorax. 2023;78(Suppl 6):s3–s19. View the published statement
Morice AH, Millqvist E, Bieksiene K, et al. ERS guidelines on the diagnosis and treatment of chronic cough in adults and children. European Respiratory Journal. 2020;55:1901136. View the ERS guideline

Why Seeing a Respiratory Physician for Your Cough is Key