Bronchitis Symptoms: Cough, Mucus & More
Bronchitis symptoms include persistent cough, mucus production and shortness of breath. Learn when symptoms indicate acute or chronic bronchitis.
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Bronchitis symptoms include persistent cough, mucus production and shortness of breath. Learn when symptoms indicate acute or chronic bronchitis.
What is Bronchitis?
Bronchitis is an inflammation of the bronchi, the airways that carry air into the lungs. There are two main types: acute bronchitis, which is usually caused by a viral infection and typically resolves within a few weeks, and chronic bronchitis, which is defined as a productive cough lasting at least three months per year for two or more consecutive years. Recognising the symptoms of bronchitis early is key to receiving timely and appropriate treatment.
Common Symptoms of Bronchitis
Cough
The hallmark symptom of bronchitis is a persistent cough. In the early stages of acute bronchitis, the cough is typically dry and irritating. As the condition progresses, the cough becomes productive, meaning it produces mucus or phlegm (sputum). This mucus can be clear, white, yellowish, or greenish. Yellow or green sputum may suggest a secondary bacterial infection.
Other Common Symptoms
- Shortness of breath or a feeling of tightness in the chest
- Wheezing or rattling sounds when breathing, especially during exhalation
- Chest discomfort or soreness, particularly when coughing
- Low-grade fever and a general feeling of being unwell
- Fatigue and exhaustion
- Sore throat and runny nose, often accompanying a cold or upper respiratory infection
Symptoms of Chronic Bronchitis
Chronic bronchitis is characterised by a long-lasting cough with regular mucus production (often referred to as a smoker's cough) and progressively worsening shortness of breath on exertion. Symptoms are typically most pronounced in the morning. Chronic bronchitis is strongly associated with smoking and can develop into chronic obstructive pulmonary disease (COPD) if left untreated.
Causes and Triggers
Acute bronchitis is caused by viruses in the vast majority of cases, including rhinoviruses, influenza viruses, and respiratory syncytial virus (RSV). Bacterial causes are less common but may include Mycoplasma pneumoniae or Bordetella pertussis (whooping cough). Additional triggers include:
- Tobacco smoke (active or passive)
- Air pollution and inhaled irritants (e.g., dust, chemicals, fumes)
- Cold and dry air
- Allergies
- A weakened immune system
Diagnosis
Bronchitis is primarily diagnosed through a physical examination and a review of the medical history. A doctor will listen to the lungs with a stethoscope (auscultation) to detect characteristic sounds such as wheezing or crackling. In certain cases, additional tests may be ordered:
- Chest X-ray to rule out pneumonia
- Lung function tests (spirometry), particularly if COPD or asthma is suspected
- Blood tests to check for signs of infection or inflammation
- Sputum analysis if a bacterial infection is suspected
Treatment
Acute Bronchitis
Since acute bronchitis is usually viral in origin, antibiotics are generally not effective and are only prescribed when a bacterial infection has been confirmed or in high-risk patients. Treatment focuses on relieving symptoms:
- Staying well hydrated to thin out mucus and make coughing easier
- Steam inhalation or saline nebulisation to keep the airways moist
- Cough suppressants (antitussives) for severe dry, irritating coughs
- Expectorants and mucolytics such as ambroxol or acetylcysteine to loosen mucus
- Pain relievers and fever reducers such as paracetamol or ibuprofen if needed
- Rest and adequate sleep to support recovery
Chronic Bronchitis
For chronic bronchitis, the most important step is eliminating the underlying cause, most importantly quitting smoking. Additional therapeutic approaches include bronchodilators (medications that open up the airways), inhaled corticosteroids, and breathing exercises as part of respiratory physiotherapy.
When to See a Doctor
Medical attention should be sought promptly in the following situations:
- A cough lasting more than three weeks
- High fever (above 39 °C / 102.2 °F)
- Blood in the sputum
- Severe shortness of breath or difficulty breathing
- Symptoms that worsen despite home treatment
- Pre-existing conditions such as heart failure, diabetes, or a compromised immune system
References
- Albert R. H.: Diagnosis and treatment of acute bronchitis. American Family Physician, 82(11):1345-1350 (2010). PubMed PMID: 21121521.
- World Health Organization (WHO): Acute respiratory infections. www.who.int (2023).
- Global Initiative for Chronic Obstructive Lung Disease (GOLD): Global Strategy for the Diagnosis, Management, and Prevention of COPD. goldcopd.org (2023).
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Related search terms: bronchitis symptoms + symptoms of bronchitis + bronchitis symptom