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Allergic Reactions

Allergic Reactions

Hypersensitivities

Hypersensitivities

Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
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Related Experiment Video

Updated: Jun 22, 2025

Zebrafish Animal Model for the Study of Allergic Reactions in Response to Tick Saliva Biomolecules

Zebrafish Animal Model for the Study of Allergic Reactions in Response to Tick Saliva Biomolecules

Published on: September 16, 2022

Anaphylaxis triggered by alpha-gal allergy.

Synne Dragesund Rørvik¹, Marie Bjørbak Alnæs², Bjørn-Christian Vikenes³

¹Hjerteavdelingen, Haukeland universitetssjukehus.

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke

|June 27, 2024

Summary

This summary is machine-generated.

Alpha-gal syndrome, a red meat allergy, is triggered by tick bites. Diagnosis involves identifying alpha-gal IgE antibodies, leading to dietary changes to avoid allergic reactions.

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Last Updated: Jun 22, 2025

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Area of Science:

Allergology
Immunology

Background:

Alpha-gal syndrome is a rare allergy linked to tick bites and mammalian meat consumption.
Sensitization occurs via tick saliva, leading to IgE antibody production against alpha-gal.

Observation:

A case presentation of a man in his sixties experiencing acute anaphylaxis.
History included multiple tick bites and recent mammalian meat intake, suggesting alpha-gal syndrome.

Findings:

Diagnosis confirmed by elevated alpha-gal IgE antibodies and clinical assessment.
The patient received dietary instructions to avoid alpha-gal-containing foods and products.

Implications:

Highlights the importance of recognizing alpha-gal syndrome in patients with anaphylaxis and tick exposure history.
Emphasizes the need for strict dietary management to prevent future allergic reactions and anaphylaxis.