What is an asthma trigger?
If you have allergic symptoms or asthma, you are sensitive to "triggers." These "triggers" can set off a reaction in your lungs and other parts of your body. Triggers can be found indoors or outdoors.

What are some common asthma triggers?

• Allergens: An allergy is a super-sensitivity to particles such as animal dander, cockroaches, dust mites, etc.
  
  
• Irritants: Things that may bother your asthma such as tobacco smoke, strong odors or perfumes, exercise, etc.
  
  
• Simple Steps to Remove Asthma Triggers in Your Home
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It is important to learn what triggers your asthma.
Ask your health care provider to help. Your health care provider may suggest:

• Keeping an asthma diary
• Testing your skin for allergies (called "skin testing")

Cutting down your exposure to triggers may help you avoid asthma and allergy episodes. If you don't know your triggers, try to limit your exposure to one trigger at a time. Watch to see if you get better. This may show you if the trigger was a problem for you.

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