Allergy can be managed by changing the conditions due to which the cause of allergy proliferate. In general, allergy is a reaction by body’s immune system towards some kind of food or other substance. According to Ayurveda, an allergy is the result of a particular substance (the allergen) aggravating a specific. Ayurveda therefore classifies allergies according to doshas: vata, Pitta and Kapha. And yes, it's possible for more than one dosha to be involved