Acute bronchitis is swelling and inflamed tissue in the main passages that carry air to the lungs. This swelling narrows the airways, which makes it harder to breathe. Other symptoms of bronchitis are a cough and coughing up mucus. Acute means the symptoms have been present only for a short time.
When acute bronchitis occurs, it almost always comes after having a cold or flu-like illness. The bronchitis infection is caused by a virus. At first, it affects your nose, sinuses, and throat. Then it spreads to the airways that lead to your lungs.
Sometimes, bacteria also infect your airways. This is more common in people with COPD.
Chronic bronchitis is a long-term condition. To be diagnosed with chronic bronchitis, you must have a cough with mucus on most days for at least 3 months.
Some symptoms of acute bronchitis are:
Even after acute bronchitis has cleared, you may have a dry, nagging cough that lasts for 1 to 4 weeks.
Sometimes it can be hard to know if you have pneumonia or bronchitis. If you have pneumonia, you are more likely to have a high fever and chills, feel sicker, or feel more short of breath.
Most people DO NOT need antibiotics for acute bronchitis caused by a virus. The infection will almost always go away on its own within 1 week. Doing these things may help you feel better:
Certain medicines that you can buy without a prescription can help break up or loosen mucus. Look for the word "guaifenesin" on the label. Ask the pharmacist for help finding it.
If your symptoms do not improve or if you are wheezing, your provider may prescribe an inhaler to open your airways.
If your provider thinks you also have bacteria in your airways, they may prescribe antibiotics. This medicine will only get rid of bacteria, not viruses.
Your provider may also prescribe corticosteroid medicine to reduce swelling in your lungs.
If you have the flu and it is caught in the first 48 hours after getting sick, your provider might also prescribe antiviral medicine.
Other tips include:
Except for the cough, symptoms usually go away in 7 to 10 days if you do not have a lung disorder. Coughing often lasts for 2 to 3 weeks.
Contact your provider if you:
Published Date: January 17, 2022
Published By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Centers for Disease Control and Prevention website. Chest cold (acute bronchitis). www.cdc.gov/antibiotic-use/community/for-patients/common-illnesses/bronchitis.html. Updated July 1, 2021. Accessed April 18, 2022.
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