Steroids, anti-inflammatory drugs such as prednisone, can be used for asthma as well as other lung diseases. Prednisone and other steroids (inhaled, oral, or by injection) help calm airway inflammation in asthma. If you've ever had a serious asthma attack, you may have had high doses of steroids in the hospital administered intravenously.
SOURCES: UptoDate Patient Information: "Trigger avoidance in asthma," "Pathogenesis and management of status asthmaticus in adults." American Academy of Allergy, Asthma & Immunology: "Tips to Remember: asthma triggers and management" and "Allergic Conditions: Exercise-Induced Asthma (EIA)." Merck Manual Home Edition: "Asthma."