Allergy shots, also known as subcutaneous immunotherapy, have been used for over 100 years for the treatment of allergic rhinitis, allergic conjunctivitis, allergic asthma, and more recently for atopic dermatitis (Allergy shots are also used for venom allergy, but not for food allergies). Immunotherapy is the only treatment for allergies that can effectively cure, or at least significantly reduce, the symptoms of allergies. Allergy shots involve the administration of the substance a person is allergic to (such as pollens, pet dander, molds and dust mites), which would seem to worsen allergy symptoms. When allergens are administered in an injection form under the skin, however, the body treats the allergens more like a vaccine. Therefore, allergic reactions don't occur and allergic symptoms don't happen - at least as much as before allergy shots.