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How does immunotherapy for hay fever work?

Immunotherapy involves regular injections or oral doses of a particular substance known to produce an allergic reaction. The amount of substance given is increased gradually each time and treatment usually continues over several years. In some people, the overall immune response decreases, leading to an improvement in hay fever symptoms.

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Author: Dr Joanne Van der Velden PhD, BSc (Hons)
First answered: 18 Sep 2014
Last reviewed: 14 May 2019
Rating: 4.7 out of 5
Votes: 1042 (Click smiley face below to rate)
Category: Pink eye


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