The number of asthma triggers reads like a grocery list. Common ones include:



Substances that cause allergies (allergens) like house dust mites, pollens, molds, pet dander, and cockroach droppings.

Irritants in the air such as cigarette smoke, smoke from woodfires or charcoal grills, strong fumes or odors like household sprays, paint, gasoline, perfumes, and scented soaps. Although people are not actually allergic to these particles, the latter can aggravate inflamed, sensitive airways.

Respiratory infections like colds, flu, sore throats, and sinus infections. These are the most common triggers in children.

Exercise and other activities that make you breathe harder.

Weather, especially dry wind, cold air, or sudden changes in weather.

Expressing strong emotions like anger, fear or excitement. When you feel strong emotions, your breathing changes even if you don't have asthma. When a person with asthma laughs, yells, or cries hard, natural airway changes may cause wheezing or other asthma symptoms.

The above might make you believe that many things cause asthma. But don't worry. Triggers vary from person to person and not all asthmatics react to the same trigger.

Generally, for better control of asthma, identified asthma triggers should be avoided, except for exercise. Exercise has been found to improve general health and should be encouraged. Medications may be given prior to exercise to prevent asthma attacks.

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