Acute bronchitis is an infection of the main airways of the lungs that causes a cough. It usually follows a cold and is almost always caused by viruses. Most people feel better within 1 to 2 weeks, although the cough can last up to 3 weeks. Antibiotics are usually not needed.
Symptoms
Cough, which may bring up clear, yellow or green phlegm
Sore chest from coughing
Mild fever
Runny nose and sore throat
Tiredness
Mild wheezing or shortness of breath
Causes
Viruses, such as those that cause colds and flu
Less often, bacteria
Smoking or breathing other smoke
Dust and air pollution
Prevention
Wash hands often with soap
Do not smoke and avoid smoky rooms
Cover coughs and sneezes
Get a flu vaccine where available, especially older adults
Treatment
Talk to a doctor
Get advice by video, voice or chat without leaving home.
Honey in warm water can ease cough (never for babies under 1 year)
Paracetamol or ibuprofen for fever and chest soreness
Avoid smoke while you recover
Antibiotics usually do not help; a doctor will decide if they are needed
Do not start antibiotics or other prescription medicines without a doctor
Common questions
Why is my cough still there after two weeks?
After bronchitis the airways stay sensitive for a while, so a cough can last up to 3 weeks. If it lasts longer, or you lose weight or sweat at night, see a doctor to check for tuberculosis or another cause.
Does green phlegm mean I need antibiotics?
Not always. Yellow or green phlegm is common in viral bronchitis too. A doctor decides on antibiotics based on your whole illness, not the colour of the phlegm alone.
