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.
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