Asthma | Symptoms and Causes

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What are the symptoms of asthma?

Symptoms of asthma are caused by inflammation, which causes narrowing of small air passages in the lungs. Symptoms may include:

  • wheezing
  • cough
  • difficulty breathing
  • chest tightness

Asthma ranges from mild with occasional symptoms to severe with persistent symptoms that make daily life difficult. Even children with mild disease may have severe asthma episodes (exacerbations).

What causes asthma?

The risk factors for developing asthma include:

  • having a parent who has, or had, asthma
  • atopic dermatitis (eczema)
  • hay fever or other environmental allergies
  • wheezing, apart from colds
  • food allergies (such as to eggs, peanuts or milk)
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