Allergens are injected into the skin, and if the swelling or redness occurs, the patient is allergic to these substances. The best cure for allergies is to avoid exposure to allergens, seasonal, although it may be difficult to open. This does not have the right to self-treat, but because some medications can cause serious side effects or contra-people who use drugs and other diseases. Plants that are pollinated by insects, such as dandelion, do not cause allergies,, seasonal allergy disease coughing, seasonal allergies allergies.