What is a common trigger for asthma exacerbations?

Respiratory infections are well-documented triggers for asthma exacerbations. They can lead to increased inflammation and bronchial hyperreactivity in individuals with asthma, causing symptoms such as wheezing, coughing, shortness of breath, and chest tightness. Viral infections, particularly the common cold, are especially significant, as they can stimulate the airway inflammation that exacerbates asthma symptoms.

The presence of an infection can compromise respiratory function and often leads to increased use of rescue inhalers or other medications. This makes it crucial for asthma patients to manage any respiratory infections actively and maintain their control measures, such as vaccination against influenza and pneumococcal disease where appropriate.

Other triggers, while they might affect asthma, do not have as strong or as direct an impact on exacerbations as respiratory infections do. Warm weather can sometimes provide relief for asthma symptoms by improving air quality, while high altitude environments can create respiratory challenges but are not common triggers. Consistent exercise is typically encouraged in asthma management, as it can actually help strengthen respiratory function, provided the exercise is done with appropriate precautions.