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Pearl · 04 of 05

Most preschool wheeze is viral, and a single episode is not asthma

Treat the wheezing episode, and judge for asthma by the pattern over time.

Wheeze in the first years of life is common and usually triggered by viral infection. Many children outgrow it, so a first episode does not establish asthma. Features that raise the likelihood of persistent asthma include wheeze between colds, eczema, allergic rhinitis, a family history of asthma and allergic sensitisation.

Label carefully, treat the episode on its merits, check inhaler or spacer technique if a device is prescribed, and review the pattern over time rather than starting long-term controller treatment on one episode.

  • Ask whether wheeze occurs only with colds or also between them.
  • Record eczema, nasal allergy and family history of asthma.
  • Check spacer technique and adherence before escalating treatment.
  • Review the pattern at follow-up rather than labelling asthma after one episode.

Why it matters

It stops a transient viral illness being turned into a lifelong label.

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