The type of hypersensitivity reaction did the client experience was a Type 1 hypersensitivity reaction. The first stage of this type of reaction is the wheal.
Type I hypersensitivity is a type of immune reaction associated with the release of immunoglobulin E (IgE) against soluble antigenic particles.
The wheal and flare are different stages during allergic responses in Type 1 hypersensitivity reactions.
The first stage or phase (the wheal) is mediated by acute phase mediators while the second phase (the flare) is mediated by late phase mediators.
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