Final answer:
Inhaled corticosteroids are crucial for long-term control of asthma and reducing the number and severity of asthma exacerbations. They work by decreasing inflammation in the airways.
Step-by-step explanation:
Inhaled corticosteroids form the cornerstone of chronic therapy for patients with persistent asthma and can reduce the number and severity of acute asthma exacerbations.
Asthma is a chronic inflammatory disease of the respiratory system where airways can become inflamed, leading to swelling and narrowing, which makes breathing difficult.
Long-term control of asthma often involves the use of corticosteroids, which are considered the most effective treatment for reducing inflammation and preventing asthma attacks.
Avoiding environmental triggers, such as air pollution and allergens, can also help prevent asthma exacerbations.