Immune System Response to a Reaction

By joannenamm
  • First-time exposure to allergen.

    First-time exposure to allergen.

    A food allergen is consumed and enters the body for the first time.

  • IgE antibody is formed.

    The IgE antibody attatches itself to cells found in tissues all over the body. The body is primed for the allergen if it enters the body again.
  • Food allergen enters body again.

    Food allergen enters body again.

    Food allergen is consumed a second time.

  • Body releases histamine.

    IgE antibodies send signals for the body to release large amounts of histamine. This is what causes an allergic reaction.
  • Allergic reaction.

    Allergic reaction.

    The release of histamine from the body causes an allergic reaction- irritation and swelling in certain areas of the body.
    Reactions can vary from minor hives and shortness of breath to anaphylactic shock.

  • Recovery

    The food allergen passes through the body and the allergic reaction calms down.