What Is An Allergy?

There’s a lot of talk about allergies. But just what
is an allergy and what causes them? Why do some people
have them while others don’t? And why are people with
one allergy more inclined to have many?

The immune system is set up to protect our bodies from
harmful, foreign substances. Like viruses and bacteria.
Sometimes the immune system doesn’t
develop properly or is just oversensitive and doesn’t
react right.

Symptoms like itching, watery eyes, runny nose,
swelling, hives or rashes. Different people have
different symptoms, but the causes are the same.

Food allergies usually result in nausea, vomiting,
stomach pains or in severe cases, life threatening
reactions. Drug allergies tend to involve the entire
body, so they have a variety of symptoms.