In asthma management, what does a controller inhaler primarily do?

A controller inhaler primarily works to reduce inflammation in the airways over time. This is crucial in asthma management because chronic inflammation can lead to airway hyperreactivity and ultimately result in asthma symptoms. Controller medications, such as corticosteroids, are taken daily to help maintain long-term control of asthma by preventing symptoms before they occur. Unlike rescue inhalers, which provide immediate relief of acute symptoms, controller inhalers are designed to address the underlying inflammation that contributes to the frequency and severity of asthma attacks.

Therefore, using a controller inhaler consistently helps to prevent exacerbations and allows for better overall asthma control, leading to improved quality of life for individuals with asthma.