Home > Patients & Visitors > Health Library > Asthma Triggers
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:
Other triggers can cause asthma symptoms without affecting the body's immune system. These include:
Health Tools help you make wise health decisions or take action to improve your health.
Other Works Consulted
Guarnieri M, Balmes JR (2014). Outdoor air pollution and asthma. Lancet, 383(9928): 1581–1592. DOI 10.1016/S0140-6736(14)60617-6. Accessed May 6, 2014.
Current as ofSeptember 5, 2018
Author: Healthwise StaffMedical Review: John Pope, MD, MPH - PediatricsE. Gregory Thompson, MD - Internal MedicineAdam Husney, MD - Family MedicineMary F. McNaughton-Collins, MD, MPH - Internal Medicine
Current as of:
September 5, 2018
Medical Review:John Pope, MD, MPH - Pediatrics & E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Mary F. McNaughton-Collins, MD, MPH - Internal Medicine
To learn more about Healthwise, visit Healthwise.org.
© 1995-2018 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.