Asthma in children

Causes of asthma in children

We don’t know exactly what causes asthma.

We don’t know exactly what causes asthma, but research has found that your child is more likely to develop asthma if:

  • you have a family history of asthma
  • they have eczema or any allergies, or you have a family history of eczema and allergies
  • they are exposed to cigarette smoke, especially if you smoke when you are pregnant

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Last medically reviewed: September 2016. Due for review: September 2019

This information uses the best available medical evidence and was produced with the support of people living with lung conditions. Find out how we produce our information. If you’d like to see our references get in touch.