Allergic rhinitis (AR), or hay fever, is a very common problem in the Australian community, with a self-reported prevalence of ~15 per cent. It is a type 1, IgA-mediated hypersensitivity reaction related to inhaled aeroallergens. AR ranges in severity from trivial to severe, with some people experiencing a significant impact on quality of life. While most patients manage their symptoms with antihistamines and other OTC preparations, GPs play a vital role in managing more severe and/or resistant disease. Supervisors play an important role in educating registrars on this common problem.