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Related Concept Videos

Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Allergic Reactions02:06

Allergic Reactions

Overview
Conditioned Taste Aversion01:14

Conditioned Taste Aversion

Conditioned taste aversion, also known as sauce béarnaise syndrome, is a phenomenon in which an individual develops an aversion to a certain food taste following a negative experience, typically illness. This form of aversion is a type of classical conditioning in which the taste of the food (conditioned stimulus, CS) is associated with the experience of illness (unconditioned stimulus, UCS).
A notable characteristic of conditioned taste aversion is that it often requires only a single exposure...
Allergic Drug Reactions01:27

Allergic Drug Reactions

Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing numerous...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...

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Related Experiment Video

Updated: Jun 1, 2026

Basophil Activation Test for Allergy Diagnosis
07:22

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Published on: May 31, 2021

Seafood allergy in children: a descriptive study.

Paul Turner1, Ian Ng, Andrew Kemp

  • 1Department of Allergy and Immunology, Children's Hospital at Westmead, Sydney, Australia. paulyt@doctors.org.uk

Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology
|June 1, 2011
PubMed
Summary
This summary is machine-generated.

Seafood allergy is a significant cause of anaphylaxis in children, with crustaceans like shrimp being most common. Many allergic children can tolerate some seafood types, indicating varied reactions.

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Area of Science:

  • Pediatric Allergy and Immunology
  • Clinical Immunology
  • Food Science

Background:

  • Food allergy prevalence has risen significantly in recent decades.
  • Seafood allergy is a major trigger for anaphylaxis in the US and Australia.
  • Limited data exists on seafood allergy's clinical presentation and management.

Purpose of the Study:

  • To characterize a large cohort of pediatric patients with seafood allergy.
  • To analyze the clinical features and triggers of seafood allergy in children.

Main Methods:

  • Retrospective chart review of children with seafood allergy.
  • Data collected from a Tertiary Allergy Service between 2006 and 2009.
  • Inclusion criteria: definite clinical reaction or positive food challenge to seafood.

Main Results:

  • 167 children diagnosed with seafood allergy; 62% were male.
  • 94% had co-existing atopic diseases.
  • Prawns/shrimp were the most frequent culprits; 20% experienced anaphylaxis.
  • Over 50% of children allergic to crustaceans tolerated non-crustacean fish.
  • Fish-allergic children often showed cross-reactivity to multiple fish species (33%) or reacted to fish vapors (16%).
  • 21% of tuna/salmon allergic children tolerated tinned fish.

Conclusions:

  • Seafood allergy is a common and critical issue in Australian children.
  • High incidence of anaphylaxis observed in pediatric seafood allergy cases.
  • Understanding cross-reactivity and tolerance patterns is crucial for management.