<s>[INST] What is asthma? [/INST] Asthma is a chronic, or long-term, disease that inflames and narrows your lungs’ airways. It causes a variety of symptoms that can worsen at any time, making breathing difficult. There are several types of asthma, each with different causes and triggers. Depending on symptoms, medicine use, and lung function, asthma is classified by severity levels, ranging from mild to intermediate to severe. Source: Asthma.com. Link: https://www.asthma.com/understanding-asthma/questions-about-asthma/. Field: Lung Disease. Disease: Asthma </s>