Two factors come into play with all allergic reactions. These are the allergen and the person who is sensitive to it. An allergen is any substance that causes an allergic reaction in an individual. To understand some of the common causes of allergic reactions, a little simple science is all that is needed.

Over two thirds of all homes have pets. Yet, official estimates of those who are allergic to animals reach as high as 10%. That is a guarantee of a lot of potential allergies. But there are several effective strategies for dealing with those facts.

Having an allergy to a particular food or group of foods can either be a minor annoyance or a life-threatening matter. The unfortunate issue with food allergies is that they are hardly ever realized until an allergic reaction has occurred. This can be an alarming situation for parents who do not know what is happening when their child eats something that they are unwittingly allergic to. It can be easy to keep children away from the foods that they have allergies to, but oftentimes those same food products are merely ingredients in other foods. Eating foods that contain even those food byproducts can also cause the same reaction.