What may cause an exacerbation of asthma symptoms?

Exercise can indeed lead to an exacerbation of asthma symptoms, particularly in individuals whose asthma is not well-controlled or who have exercise-induced bronchoconstriction. When a person with asthma engages in vigorous physical activity, the increased respiratory rate can cause the airways to become dry and cool, which may trigger inflammation and bronchospasm. This is especially true in cold, dry environments where the inhalation of air can lead to more pronounced airway narrowing and breathing difficulties.

In contrast, low humidity tends to be a more neutral factor for asthma, as it can help in alleviating some symptoms and making it easier to breathe. Increased hydration generally supports overall lung function, and regular medication use is essential for managing asthma and preventing exacerbations, as these medications help maintain airway patency and control inflammation.