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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,...
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Mouse Body Temperature Measurement Using Infrared Thermometer During Passive Systemic Anaphylaxis and Food Allergy Evaluation
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Japanese Guideline for Food Allergy 2014.

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Accurately identifying causative foods is crucial for managing food allergies and preventing adverse reactions. The oral challenge test is the most reliable diagnostic method, though it requires medical supervision due to potential anaphylaxis risks.

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Area of Science:

  • Immunology
  • Gastroenterology
  • Dermatology

Background:

  • Food allergies involve adverse reactions from specific food antigens.
  • Symptoms manifest across multiple organs, with distinct clinical classifications.
  • Management includes treating hypersensitivity and prophylactic measures like elimination diets.

Purpose of the Study:

  • To outline the classification and diagnostic approaches for food allergies.
  • To emphasize the importance of accurate causative food identification.
  • To highlight the oral challenge test as the most reliable diagnostic method.

Main Methods:

  • Review of food allergy classifications and symptoms.
  • Discussion of diagnostic tools including history, skin prick tests, IgE antibody detection, basophil histamine release tests, elimination diets, and oral challenge tests.
  • Emphasis on the oral challenge test's reliability and safety considerations.

Main Results:

  • Food allergies present with diverse symptoms and are categorized into four main clinical types.
  • Various diagnostic methods exist, each with specific applications.
  • The oral challenge test is identified as the most definitive diagnostic procedure.

Conclusions:

  • Accurate identification of causative foods is essential for effective food allergy management.
  • The oral challenge test, while highly reliable, necessitates careful medical supervision due to potential risks like anaphylaxis.
  • Prophylactic measures, such as elimination diets, should be judiciously employed after confirmed diagnosis.