Allergic rhinitis and hay fever are the result of our immune system’s overreaction to innocuous substances such as dust and pet allergens and pollen. The body reacts by producing histamines. Normal amounts of histamines in your brain are good – they are the things that keep us alert, attentive and awake. But when there are too many in the body, they produce the sneezing and other symptoms common to airborne allergy sufferers

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