Allergies are caused due to hypersensitivity of the immune system to an environmental trigger that may not affect most people exposed to the same allergen. Antihistamines and decongestants are available over the counter for relief from allergies; however, they have to be taken often if the period of exposure to the allergen occurs for a prolonged period. A research team from The University of Queensland has developed a single treatment for allergy that could potentially offer lifelong protection.
