A treatment for hayfever and allergic-type asthma that involves periodic injections of the allergens (such as pollens, molds, and dust mite) that are causing the allergic reaction or asthmatic attacks. The injections, commonly called allergy shots, work to build up an immunity to the allergens and help prevent attacks of hayfever or asthma.
Also called â€˜allergy shots'. Specific allergens are injected regularly over a period of time in order to reduce the person's reaction to the allergen.
The process by which an allergy patient is exposed, usually by injection, to gradually increasing amounts of an allergen for the purpose of decreasing sensitivity to the allergen; mechanism of action is not clear