9 doctors weighed in:

What is bronchiolitis?

9 doctors weighed in
Dr. Julia Sundel
Pediatrics
3 doctors agree

In brief: Lung infection

Bronchiolitis is an infection of the smallest breathing tubes in the lungs (bronchioles).
The small airways become inflamed, swollen and filled with mucus. This can lead to breathing difficulty. It is caused by viruses such as RSV and influenza. It is more common in children under age 2 and peaks at 3-6 months of age.

In brief: Lung infection

Bronchiolitis is an infection of the smallest breathing tubes in the lungs (bronchioles).
The small airways become inflamed, swollen and filled with mucus. This can lead to breathing difficulty. It is caused by viruses such as RSV and influenza. It is more common in children under age 2 and peaks at 3-6 months of age.
Dr. Julia Sundel
Dr. Julia Sundel
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Dr. Robert Kwok
Pediatrics
1 doctor agrees

In brief: Viral lung infection

Bronchiolitis is a viral lung infection that causes damage and mucous in the smaller airways (air passages) in the lungs.
Bronchiolitis is usually caused by the RSV virus, and occurs in babies and toddlers. After age 2 years, children have better immunity and can usually block the RSV virus from damaging the lungs. So, older children and adults just have cold symptoms when they catch rsv.

In brief: Viral lung infection

Bronchiolitis is a viral lung infection that causes damage and mucous in the smaller airways (air passages) in the lungs.
Bronchiolitis is usually caused by the RSV virus, and occurs in babies and toddlers. After age 2 years, children have better immunity and can usually block the RSV virus from damaging the lungs. So, older children and adults just have cold symptoms when they catch rsv.
Dr. Robert Kwok
Dr. Robert Kwok
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Dr. Marcus Degraw
Pediatrics
1 doctor agrees

In brief: A viral infection

Bronchiolitis usually affects children under the age of 2, and is even more common in the first 6 months of life.
It is a common, and sometimes severe illness. Viruses that can cause bronchiolitis include: rsv, flu and adenovirus. Bronchiolitis essentially is swelling and snot in the smallest air passages in the lungs.

In brief: A viral infection

Bronchiolitis usually affects children under the age of 2, and is even more common in the first 6 months of life.
It is a common, and sometimes severe illness. Viruses that can cause bronchiolitis include: rsv, flu and adenovirus. Bronchiolitis essentially is swelling and snot in the smallest air passages in the lungs.
Dr. Marcus Degraw
Dr. Marcus Degraw
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Dr. James Ferguson
Pediatrics

In brief: Small airway infect

If you think of the lungs as a tree upside down with limbs representing airways, the bronchioles are like the smaller branches and twigs where the leaves (air exchange blebs)attach.
In broonchiolitis these air channels are often filled with excess mucous and may spasm with infectious swelling. The result is hampered oxygen exchange, wheezing and cough.

In brief: Small airway infect

If you think of the lungs as a tree upside down with limbs representing airways, the bronchioles are like the smaller branches and twigs where the leaves (air exchange blebs)attach.
In broonchiolitis these air channels are often filled with excess mucous and may spasm with infectious swelling. The result is hampered oxygen exchange, wheezing and cough.
Dr. James Ferguson
Dr. James Ferguson
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