What causes asthma symptoms?
Your asthma can flare up for many different reasons. Allergies can make your asthma symptoms get worse. Viral infections (such as a cold), tobacco, pollutants (such as wood smoke), cold air, exercise, fumes from chemicals or perfume, sinus infections and heartburn can all cause a flare-up. For some people, strong emotions or stress can trigger an asthma attack. Pay attention to the way these things affect your asthma. If you and your doctor figure out which things bother your asthma, you can start trying to address them.
Written by familydoctor.org editorial staff