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1
Someone eats a food for the first time, that they are unaware they are allergic to. -
2
When that person eats the "poisonous food," or allergen, the body makes a protein that can detect the allergen, it is called an antibody. -
3
The antibody, forms and attaches itself to cells found in tissues all over the body; this is in order to prepare the body for the scenario that the allergen enters the body again. -
4
When and if the food allergen were to enter the body again, the allergen will bind to the antibodies and send out signals to the body to release large amounts of histamine. -
5
The histamine is what causes the irritation/swelling/redness in many different cases of allergic reactions. This is the most apparent way to tell if someone is having an allergic reaction because it is visible to other people. -
6
The result of this irritation varies from person to person. Such reactions include the formation of mild hives, shortness of breath, or anaphylaxis. The reaction varies based on the person, the severity of their allergy, whether the allergen was ingested or just came in contact with the person, along with many other contributing factors are what determine the type of reaction a person has.
