The pattern of your symptoms depends entirely on what you are allergic to. For example, if you are allergic to grass pollen you will have symptoms only when significant amounts of grass pollen are in the air. Your symptoms will start towards the end of May and continue throughout the summer, gradually decreas­ing towards the end of August. Similarly, if you were allergic to tree pollen, or weed pollen, you would have symptoms in spring or autumn respectively.


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