All Children's Hospital Logo

Health Information Library

Parents > Asthma Center > Words to Know > Definition: Triggers
Definition: Triggers
Triggers
(Factores desencadenantes)

During normal breathing, the airways to the lungs are fully open, allowing air to easily move in and out. In a person with asthma, the airways are inflamed and overly sensitive to certain things that wouldn't usually bother others. These can be substances, events, or activities, and they're known as triggers because they "trigger," or bring on, asthma symptoms such as cough, wheezing, and shortness of breath. Triggers can vary from person to person and from season to season and can change as a child grows older. Some common triggers include: allergens (substances that cause allergies), viral infections, cold air, exercise, and smoke.

Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995-2014 The Nemours Foundation/KidsHealth. All rights reserved.

Related Information

Pulmonology
External Links
Physician Directory

Additional Info

Pocket Doc Mobile App
Maps and Locations (Mobile)
Programs & Services
Employment
For Health Professionals
For Patients & Families
Contact Us
Find a Doctor
News
CME

All Children's Hospital
501 6th Ave South
St. Petersburg, FL 33701
(727) 898-7451
(800) 456-4543

Use Normal Template
© 2014 All Children's Hospital - All Rights Reserved