What are allergies?

Allergies are the body’s response to a foreign substance. Allergies can cause sneezing, coughing, itchy eyes and skin, runny nose, hives, rashes, and more. The most common allergens include pollen from trees and grasses; mold spores; dust mites; pet dander; insect bites; peanuts; eggs; and shellfish. Allergies are not contagious and cannot be transmitted from person to person.

What causes them?

When we breathe in an allergen, our immune system identifies it as a danger because it is unfamiliar to our body. Therefore, our body produces antibodies called immunoglobulin E (IgE) antibodies that cause inflammation when they come into contact with the allergen. This inflammation triggers symptoms such as hay fever or asthma attacks in some people.

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