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Asthma Triggers - Topic Overview

An asthma trigger is a factor that can lead to sudden difficulty breathing or other symptoms of asthma (asthma attack).

Some triggers are substances a person may be allergic to (allergens). Allergens cause the body's natural defenses (immune system) to produce chemicals called immunoglobulin E (IgE) antibodies. These chemicals bind to allergens, causing inflammation of the bronchial tubes, which carry air to the lungs. The allergen may also cause asthma attacks. These triggers include:

Recommended Related to Asthma

Asthma in Children and Infants

Not all children have the same asthma symptoms, and these symptoms can vary from episode to episode in the same child. Possible signs and symptoms of asthma in children include: Frequent coughing spells, which may occur during play, at night, or while laughing or crying A chronic cough (which may be the only symptom) Less energy during play Rapid breathing (intermittently) Complaint of chest tightness or chest "hurting" Whistling sound when breathing in or out -- called wheezing...

Read the Asthma in Children and Infants article > >

Other triggers can cause asthma symptoms without affecting the body's immune system. These include:

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WebMD Medical Reference from Healthwise

Last Updated: March 14, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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