Asthma triggers can include URI, exercise, and inhaled allergens. Which option best captures this?

Asthma triggers can include URI, exercise, and inhaled allergens. Which option best captures this?

• A. URI
• B. Exercise
• C. Inhaled allergens
• D. All of the above

Answer: (D)

Asthma triggers come from several different sources, and the best answer is the one that encompasses all of them. Infections of the upper respiratory tract can irritate the airways and increase airway responsiveness, making symptoms more likely. Exercise can provoke bronchoconstriction during or after activity due to cooling and drying of the airways. Inhaled allergens such as dust mites, pollen, or pet dander can trigger allergic inflammation in susceptible individuals. Because all three categories can provoke asthma symptoms, the option that includes all of them best captures the range of possible triggers.

Asthma triggers come from several different sources, and the best answer is the one that encompasses all of them. Infections of the upper respiratory tract can irritate the airways and increase airway responsiveness, making symptoms more likely. Exercise can provoke bronchoconstriction during or after activity due to cooling and drying of the airways. Inhaled allergens such as dust mites, pollen, or pet dander can trigger allergic inflammation in susceptible individuals. Because all three categories can provoke asthma symptoms, the option that includes all of them best captures the range of possible triggers.