- A high-pitched purring or whistling sound produced during breathing out.
- Rapid breathing rate is commonly associated.
- Note: Rapid breathing is more than 60 breaths/minute if less than two months old, more than 50 if two to twelve months old, more than 40 if one to five years old, more than 30 if five to twelve years old and more than 20 if older than twelve and through their teens.
Causes
- Main cause in the first 2 years of life: bronchiolitis (peaks at 6-12 months). This is a viral infection (most often-RSV) of the small airways (bronchioles).
- Main cause: after age 3, may be the first attack of asthma.
- Use this guideline only if the child has never been treated for asthma.
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If not, see these other symptoms
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