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What are the main asthma triggers?
Different triggers can start an asthma attack, and children differ greatly in how easily and how severely they react.
Some triggers (also called ‘inciters’) only cause tightening of the airways (bronchoconstriction) that lasts for just a short time. These triggers include:
play and exercise
cigarette smoke
changes in air temperature
laughing
strong smells
Other triggers (also called ‘inducers’) also increase the underlying inflammation of the airways, and may have longer-term effects. Such triggers include:
allergens (e.g. pets, house dust mites and pollen)
infections (e.g. colds, flu)
certain chemicals
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