When is asthma most often exacerbated?

• A. Following an upper respiratory infection
• B. During exercise
• C. In the early morning
• D. After exposure to cold air

Answer: (A)

Viral upper respiratory infections are the most common trigger for asthma flares. When a person catches a virus, the airway lining becomes inflamed, mucus production increases, and the airways become more hyperresponsive. This combination makes it easier for wheezing, coughing, and shortness of breath to worsen into a noticeable exacerbation, often peaking a few days after the onset of the URI. This pattern holds across ages, including children and adults, which is why preventing and promptly managing viral infections is a key focus in reducing asthma attacks.

Other triggers like exercise, cold air, or early-morning symptoms can provoke symptoms in some people, especially those with exercise-induced bronchoconstriction or nocturnal asthma, but they are not the most frequent cause of exacerbations overall.