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People with asthma have “triggers,” things that cause asthma symptoms or make them worse. Triggers are different for each person. Knowing what your individual triggers are and controlling exposure to them can help keep your asthma under control.

Common Asthma Triggers Include:


  • Dust Mites
  • Animals: dog, cat, rabbit, birds, rats, horses
  • Pollen from trees, grass, weeds
  • Molds
  • Cockroaches and their droppings
  • Rodents and their droppings
  • Food: Peanuts, eggs, strawberries etc.


  • Changes in weather
  • Cold, dry air
  • Hot, humid air
  • Wet weather
  • Wind

Chemical Irritants

  • Perfume
  • Hairspray
  • Paint fumes
  • Cleaning products


  • Colds
  • Influenza (flu)
  • Sinus infection
  • Other respiratory illnesses

Strong Emotions

  • Anger
  • Anxiety
  • Fear
  • Excitement
  • Sadness
  • Laughter

Smoke-related Irritantscigarette

  • Cigarette smoke
  • Cigar smoke
  • Pipe smoke
  • Wild fires
  • Wood burning
  • Car exhaust
  • Air pollution

For information on how to manage asthma triggers, please see the Asthma Initiative of Michigan.

To identify triggers in your home please see CDC Home Asthma Triggers Checklist Adobe Acrobat Reader Symbol.

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New Hampshire Department of Health and Human Services
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