Health condition
Chronic bronchitis
Chronic bronchitis - a phlegmy cough on most days for months of the year, over two consecutive years - is the airway-inflammation face of COPD, and its treatment pillars are stopping smoking, inhaled therapy and flare prevention.
Why trust this guide
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Editorial team
Written by our editorial team from the UK sources listed on each page.
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Sourced from guidance
Checked against current NHS and UK specialist society guidance at the time of review.
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Current for 2026
Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.
Key facts
The essentials at a glance.
The symptoms to recognise, when to seek help, which specialist to see, and what treatment usually involves.
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Definition: productive cough on most days for at least 3 months of the year, in 2 consecutive years, without another explanation
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Smoking is the dominant cause; pollution, dusts and fumes contribute
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Assessment includes spirometry for airflow obstruction - chronic bronchitis and emphysema commonly coexist within COPD
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Specialist: a consultant respiratory physician; mucolytics, correct inhalers and prompt flare treatment reduce the burden, and stopping smoking slows or halts progression
Understanding the condition
What it is and what happens next.
What causes it, how it is diagnosed, and the treatment routes available in the UK.
What it is and how it feels
The airways respond to years of smoke by remodelling into mucus factories: glands enlarge, secretions multiply, the clearing cilia are paralysed - and the result is the daily phlegmy cough, worse on winter mornings, that many smokers dismiss as normal. It is not: chronic bronchitis marks established airway inflammation, brings recurring infective flare-ups as mucus stagnates, and commonly coexists with emphysema and airflow obstruction as part of COPD, which spirometry establishes.
Diagnosis and treatment routes
Stopping smoking remains the intervention that changes the disease's direction - cough and phlegm measurably decline within months of quitting - while inhaled bronchodilators (with inhaled steroids for frequent exacerbators), mucolytic tablets for tenacious phlegm, vaccination, and pulmonary rehabilitation for the breathless complete the core plan. A written action plan for flares, with early antibiotics when phlegm turns purulent, protects the lungs from the cumulative damage of untreated exacerbations, and any change in the cough's pattern or blood in the phlegm warrants a chest X-ray promptly. In many parts of the UK, routine NHS referrals for this kind of problem currently take 20-45+ weeks, whereas an initial appointment with a private consultant is typically available within around two weeks.
Seeing a specialist
Who to see, and how quickly you can be seen.
The specialist for this condition is usually a consultant respiratory physician. Your GP can refer you on the NHS, or you can arrange a private consultation directly.
A quiet reminder
This guide is for information, not medical advice.
Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any of the emergency symptoms described above.
Frequently asked
Common questions about Chronic bronchitis.
Quick, plain-English answers to what people ask us most.
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What is chronic bronchitis?
Chronic bronchitis is a long-term inflammation of the airways (bronchi) in the lungs, causing a persistent cough with mucus production for at least three months a year, over two consecutive years. It is one of the main forms of chronic obstructive pulmonary disease (COPD), often occurring alongside emphysema. It results in ongoing airway narrowing and mucus overproduction that gradually affects breathing.
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What causes chronic bronchitis?
The leading cause by far is long-term cigarette smoking, which damages and inflames the airways over years. Other contributing factors include long-term exposure to air pollution, occupational dusts and chemicals, and, less commonly, genetic factors. Stopping smoking is the single most important step in slowing progression once diagnosed.
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What symptoms does chronic bronchitis cause?
The characteristic symptom is a persistent cough with mucus production, often worse in the mornings, along with breathlessness that gradually worsens over time, wheezing, and increased frequency of chest infections. Symptoms often develop gradually over years, sometimes leading people to underestimate their significance until they are quite advanced. Symptoms typically worsen during flare-ups (exacerbations), often triggered by infections.
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Is chronic bronchitis dangerous?
Yes, it is a progressive condition that can significantly reduce lung function and quality of life over time, and increases the risk of respiratory failure, heart strain, and more frequent, sometimes serious, chest infections. Stopping smoking and appropriate ongoing treatment can significantly slow progression and reduce exacerbation frequency. Early diagnosis and treatment generally lead to better long-term outcomes.
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Can chronic bronchitis be cured?
There is no cure, as the airway damage that has already occurred cannot be fully reversed, but stopping smoking, along with appropriate inhaler treatment, pulmonary rehabilitation, and vaccination against relevant infections, can significantly slow further progression and improve symptoms and quality of life. Many people achieve good symptom control with comprehensive management. The earlier effective management starts, the better the long-term outlook tends to be.
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How is chronic bronchitis treated?
Treatment centres on stopping smoking (the single most impactful step), inhaler therapy to open airways and reduce inflammation, pulmonary rehabilitation to improve fitness and symptom management, and prompt treatment of any chest infections or flare-ups. Vaccination against flu and pneumococcal infection is also recommended to reduce infection risk. Regular respiratory specialist review helps optimise treatment over time.
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When should I see a specialist?
See a doctor if you have a persistent cough with mucus production lasting several weeks, or breathlessness that is worsening, particularly if you smoke or have smoked. NHS respiratory referral can take several weeks; a private respiratory consultation is typically available within about 2 weeks for earlier assessment and lung function testing.