For most allergy sufferers, their allergy leads to a significantly reduced quality of life, affecting both work and leisure time. Allergic patients can relieve symptoms by self-imposing restrictions on activities to avoid allergen exposure. Self-imposed restrictions may have psychological and social consequences. Allergic disease has significant socio-economic impact on the patient, the patient’s family and the society as a whole. According to a European survey of diagnosed allergy sufferers, around 80% of the respondents find that their disease considerably affects their daily activities. The growing prevalence of allergy also has major economic consequences for society through reduced working capacity and more sick leave, placing a greater burden on healthcare resources and increasing medication costs.