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First step
When a person eats an allergen, or substance that causes an allergic reaction for the first time. -
Second step
Once the allergen is eaten, the body creates an antibody or a protein that detects the harmful substances. -
Third step
The antibody attaches itself to cells found in tissues all over the body in order to prepare the body for if that allergen enters the body again. -
Fourth step
If the food allergen enters the body again, the allergen binds to the antibodies and sends out signals to the body to release large amounts of histamine. -
Sixth step
The result of this irritation varies in person to person, from mild hives, to shortness of breath, to anaphylaxis, and if it isn't treated soon it could even cause death. -
Fifth step
The histamine causes irritation and swelling in parts of the body. This is when people might get hives, itchy skin, etc.