When the immune system reacts to something that does not
bother most other people, the body's response cascade that follows is often
referred to as an allergy reaction. Often people who have allergies are
sensitive to more than one thing. Scientists think that our genetic makeup and
our environment contribute to whether or not we will have allergies.
We need our immune system to sound the alarm and fight
germs. It is our body's defense system. But, if you suffer from allergies your
body may sound a false alarm and cause a runny nose, sneezing, swelling, and
rash that makes you feel bad when you are exposed to substances trigger.
