Introduction
Childhood Asthma 
Impact
Symptoms
Triggers
Treatment
  
 
About Asthma » Triggers
 

In most cases, asthma results from a combination of allergic and non-allergic responses to certain substances or conditions. These are called triggers. The most common asthma triggers are:

 
   movers Toronto Allergens, such as pollen, cockroaches and molds
 
Air pollutants and irritants
 
Smoking and secondhand smoke
 
Respiratory infections, including the common cold
 
Physical exertion, including exercise
 
Cold air
  
Certain medications
 
Emotional stress
 

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