If you are experiencing a medical emergency please dial 911 immediately
Bronchiolitis is an infection of the bronchioles, the small air passages in the lungs. It is common in young children and is the leading cause of serious lower respiratory illness in infants.
Bronchiolitis is usually caused by a virus, especially respiratory syncytial virus (RSV), and frequently occurs in the late fall to early spring.
Symptoms of bronchiolitis include runny nose, cough, and fever. After a few days, your child may experience shortness of breath and/or breathing that is rapid and labored with wheezing.
A severe infection in infants may cause a noticeably increased breathing rate. For information on what to do if your child has trouble breathing, see the topic Respiratory Problems, Age 11 and Younger.
If your child has heart disease or was born prematurely, call your doctor at the first sign of bronchiolitis.
Symptoms of bronchiolitis may last up to 5 days. Most children get better in 1 to 2 weeks.
A doctor may diagnose bronchiolitis based on a medical history, your child's symptoms, and a physical exam. Testing is usually not needed if your doctor suspects the bronchiolitis is caused by RSV.
Home treatment to manage the symptoms of bronchiolitis is usually all that is needed. Have your child drink plenty of liquids to avoid dehydration. If your baby has a stuffy nose, use a suction bulb to remove mucus. Fever medicine (such as acetaminophen or ibuprofen) may help reduce fever discomfort. Do not give aspirin to anyone younger than 20 because of the risk of Reye syndrome, a serious illness. Over-the-counter cough and cold medicines are not recommended.
The doctor may suggest bronchodilator medicine if your child has shown the tendency to have allergic reactions (atopy). In severe cases, your child may need to stay in the hospital or get extra oxygen.
It is common for children to get respiratory problems (such as bronchiolitis caused by a viral infection), because they are often exposed to people who have infections to which they have not built up immunity. Bronchiolitis is spread just like a cold. To prevent bronchiolitis:
If your child was born early (prematurely), has heart or lung disease, or has other conditions that make it more likely to have problems from RSV, ask the doctor if palivizumab (Synagis) might help. This medicine helps prevent bronchiolitis and other problems from RSV in children most likely to have problems (susceptible). It is injected once a month during RSV season—late fall to early spring.
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This website is sponsored by the Nemours Foundation. It has a wide range of information about children's health—from allergies and diseases to normal growth and development (birth to adolescence). This website offers separate areas for kids, teens, and parents, each providing age-appropriate information that the child or parent can understand. You can sign up to get weekly emails about your area of interest.
Other Works Consulted
- Bourke T, Shields M (2011). Bronchiolitis, search date July 2010. BMJ Clinical Evidence. Available online: http://www.clinicalevidence.com.
- Federico MJ, et al. (2011). Respiratory tract and mediastinum. In WW Hay et al., eds., Current Diagnosis and Treatment: Pediatrics, 20th ed., pp. 487–535. New York: McGraw-Hill.
- Gadomski AM, Brower M (2010). Bronchodilators for bronchiolitis. Cochrane Database of Systematic Reviews (12).
- Hall CB, McBride JT (2010). Bronchiolitis. In GL Mandell et al., eds., Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases, 7th ed., vol. 1, pp. 885–889. Philadelphia: Churchill Livingstone Elsevier.
- Hayden FG and Ison MG (2006). Respiratory viral infections. In DC Dale, DD Federman, eds., ACP Medicine, section 7, chap. 25. New York: WebMD.
- Seiden JA (2009). Bronchiolitis: An evidence-based approach to management. Clinical Pediatric Emergency Medicine, 10(2): 75–81.
- Subcommittee on Diagnosis and Management of Bronchiolitis, American Academy of Pediatrics (2006). Diagnosis and management of bronchiolitis. Pediatrics, 118(4): 1774–1793.
- Welliver RC (2009). Bronchiolitis and infectious asthma. In RD Feigin et al., eds., Feigin and Cherry's Textbook of Pediatric Infectious Diseases, 6th ed., vol. 1, pp. 277–288. Philadelphia: Saunders Elsevier.
- Zore JJ, Hall CB (2010). Bronchiolitis: Recent evidence on diagnosis and management. Pediatrics, 125(2): 342–349.
|Primary Medical Reviewer||Susan C. Kim, MD - Pediatrics|
|Specialist Medical Reviewer||John Pope, MD - Pediatrics|
|Last Revised||June 25, 2012|
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