What are the different types of asthma?

Asthma...: Asthma is actually one disease with many triggers. For example, for some asthmatics, exercise triggers their asthma to exacerbate and this is labeled exercise-induced asthma. Some patients are triggered by allergens while others are triggered by upper respiratory infections. In all cases, the asthma is the same but the triggers are different.

Various types: Historically, asthma was classified as extrinsic (allergy triggers) or intrinsic (smoke, fumes, cold air). Also asthma can be classified by severity such as intermittent or persistent (mild, moderate or severe). Asthma can be occupational or work-related. Sometimes asthma is classified by predominant symptom such as cough-variant asthma.