What is the primary role of corticosteroids in asthma management?

Corticosteroids play a crucial role in asthma management primarily by reducing inflammation within the airways. Asthma is characterized by chronic inflammation, leading to airway hyperreactivity, obstruction, and difficulty with airflow. Corticosteroids work by dampening the inflammatory response in the airways, which helps to alleviate symptoms such as wheezing, shortness of breath, and coughing.

By addressing the underlying inflammation, corticosteroids not only improve the immediate symptoms but also contribute to long-term control of asthma. This reduction in inflammation can prevent exacerbations, which are episodes of worsening asthma that can occur due to triggers such as allergens or respiratory infections. In essence, corticosteroids are foundational in managing asthma effectively and ensuring a decrease in the frequency and severity of asthma attacks.

In comparison, the other roles associated with the incorrect options do not align with the purpose of corticosteroids. For instance, increasing respiratory rate, promoting mucus production, or stimulating the immune response are not objectives of corticosteroid therapy in asthma, as these can contribute to worsened symptoms or exacerbations rather than providing control.