What is it?
Acute bronchitis is a sudden inflammation of the bronchi (airways) in the lungs, usually due to an infection.
It’s a self-limiting condition lasting less than 3 weeks in most cases.
📌 Causes:
Viral infections (most common)
Influenza virus
Rhinovirus
Adenovirus
Coronavirus
Bacterial infections (less common)
Mycoplasma pneumoniae
Chlamydophila pneumoniae
Bordetella pertussis
Other irritants:
Smoke
Dust
Chemical fumes
Pollution
📌 Clinical Features:
Cough (most common, dry → productive)
Low-grade fever
Sore throat
Runny nose / nasal congestion
Wheezing
Chest tightness or discomfort
Fatigue
Sometimes mild breathlessness (in severe cases)
Note: No signs of pneumonia on examination (no crackles or bronchial breathing)
📌 Diagnosis:
Usually clinical — based on history and symptoms.
Chest X-ray: Done if pneumonia is suspected (fever, breathlessness, crepitations)
Pulse oximetry: To check oxygen levels
CBC: Mildly elevated WBC if bacterial
Sputum culture: Rarely needed
📌 Treatment:
Supportive care
Rest
Plenty of fluids
Steam inhalation
Warm saline gargles
Antipyretics and analgesics
Paracetamol
Ibuprofen
Antitussives (for severe cough)
Bronchodilators (if wheezing)
Antibiotics — usually not needed (unless bacterial infection suspected or patient is immunocompromised)
📌 Complications:
Chronic bronchitis (if recurrent)
Pneumonia (rare)
Exacerbation in asthma or COPD patients