What exactly are allergies?  we all know how allergies affect us. The itching, sneezing, watery eyes, runny nose and other symptoms of allergies often send us running for the Sudafed. But what is it that causes allergies?

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

In these cases, it reacts to things that aren’t harmful and don’t usually cause people any problems. These things are called allergens. The term allergens is just an easier way to say “things that cause allergies”.

When the oversensitive or improperly developed immune system sees these allergens, it sends out chemicals like histamine. It’s the histamines that cause the symptoms that are common with allergies.

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

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