The National Heart, Lung, and Blood Institute offers the following helpful information regarding asthma triggers.  By identifying the triggers of your asthma, you can help prevent attacks.

What Causes Asthma?

It is not clear exactly what makes the airways of people with asthma inflamed in the first place. Your inflamed airways may be due to a combination of things. We know that if other people in your family have asthma, you are more likely to develop it. New research suggests exposures early in your life (like tobacco smoke, infections and some allergens) may be important.

What Causes Asthma Attacks?

There are things that can make asthma symptoms worse and lead to asthma attacks. Some of the more common things that can worsen your asthma symptoms are exercise, allergens, irritants and viral infections. Some people only have asthma with exercise or a viral infection. The lists below give some examples of things that can worsen asthma symptoms.

Allergens

• Animal dander (from the skin, hair or feathers of animals)
• Dust mites (contained in house dust)
• Cockroaches
• Pollen from trees and grass
• Mold (indoor and outdoor)

Irritants

• Cigarette smoke
• Air pollution
• Cold air or changes in weather
• Strong odors from painting or cooking
• Scented products
• Strong emotional expression (including crying or laughing hard), and stress

Others

• Medications such as aspirin and beta-blockers
• Sulfites in food (dried fruit) or beverages (wine)
• A condition called gastroesophageal reflux disease (GERD) that causes heartburn and can worsen asthma symptoms, especially at night
• Irritants or allergens that you may be exposed to at your work such as special chemicals or dusts
• Infections

This is not a complete list of all the things that can worsen asthma. People can have trouble with one or more of these. It is important for you to learn which ones are problems for you. Your doctor can help you identify which things affect your asthma and ways to avoid them.

Source: The National Heart, Lung, and Blood Institute