Overview
Chronic bronchitis is a form of chronic obstructive pulmonary disease (COPD). It is defined by a productive cough (producing mucus) that lasts for at least three months in two consecutive years. It is most often caused by smoking.
Unlike acute bronchitis, which usually clears up within a few weeks, chronic bronchitis is a long-term condition that requires ongoing management. The persistent inflammation of the bronchial tubes leads to excess mucus production, airway narrowing, and difficulty breathing. Early diagnosis and lifestyle changes — especially quitting smoking — can significantly slow disease progression and improve quality of life.
Symptoms
Symptoms include a persistent cough, excess mucus (sputum) production, shortness of breath, chest tightness, and frequent respiratory infections.
- Persistent cough — often worse in the morning and in damp weather
- Excess mucus (sputum) — clear, white, yellow, or green
- Shortness of breath — especially during physical activity
- Wheezing — a whistling sound when breathing
- Chest tightness or discomfort
- Frequent colds or respiratory infections
- Fatigue and low energy
- Low-grade fever during flare-ups
Causes
The primary cause is cigarette smoking. Other causes include long-term exposure to air pollution, dust, or chemical fumes. Genetics may also play a role.
- Cigarette smoking — responsible for the vast majority of cases
- Secondhand smoke — long-term exposure can also cause chronic bronchitis
- Air pollution — industrial emissions, vehicle exhaust, and indoor cooking smoke
- Occupational exposure — dust, silica, coal, grain, and chemical fumes
- Genetic factors — alpha-1 antitrypsin deficiency and other inherited traits
- Recurrent childhood respiratory infections — may increase susceptibility
Treatment
Treatment includes quitting smoking, bronchodilators, inhaled steroids, and pulmonary rehabilitation. Vaccinations (flu and pneumonia) are recommended.
- Smoking cessation — the single most important step to slow disease progression
- Bronchodilators — relax airway muscles and improve airflow
- Inhaled corticosteroids — reduce airway inflammation
- Pulmonary rehabilitation — exercise training, breathing techniques, and education
- Vaccinations — annual flu shot and pneumococcal vaccine
- Oxygen therapy — for severe cases with low blood oxygen
- Airway clearance techniques — to help clear mucus
- Lifestyle changes — avoiding pollutants, staying hydrated, and regular exercise
When to See a Doctor
See a doctor if you have a cough that produces mucus for a long period, especially if you smoke.
Seek immediate medical attention if you experience:
- Severe shortness of breath or difficulty breathing
- Coughing up blood
- High fever or chills
- Chest pain or tightness that worsens
- Confusion, drowsiness, or fainting
- Blue lips or fingertips (cyanosis)