How can changes in weather affect asthma symptoms?

Changes in weather can significantly influence asthma symptoms due to various environmental factors that can either exacerbate or alleviate respiratory conditions. Cold air, for instance, is known to narrow airways and can lead to increased bronchial hyperresponsiveness, causing difficulties in breathing for individuals with asthma. Additionally, high humidity creates an environment that can promote the growth of mold and dust mites, which are common allergens and triggers for asthma symptoms.

Conversely, dry air can also be a trigger, but this is less commonly addressed compared to the impacts of cold and humid conditions. Understanding how weather impacts asthma management is crucial for patients to help them take appropriate precautions based on the forecast, such as dressing warmly in cold weather or staying indoors when humidity is high.

While other options suggest that certain weather conditions have no impact or exclusively improve symptoms, they overlook the reality that weather fluctuations often play a critical role in both the frequency and severity of asthma attacks. Hence, option B accurately reflects the complexities of how weather changes can trigger or worsen asthma symptoms.