If a patient with a known severe shellfish allergy accidentally consumes shrimp, which consequence is most likely?

💡 Explanation

Systemic vasodilation and hypotension result from anaphylaxis, because the ingestion of shellfish triggers IgE-mediated mast cell degranulation, releasing histamine and other mediators, therefore causing widespread vasodilation and a drop in blood pressure, rather than affecting gastric acid, blood cell count or liver function.

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