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Beer-induced anaphylaxis due to barley sensitization: two case reports
P Bonadonna1, M Crivellaro, A Dama
1Allergology Service, Ospedale Civile Maggiore, Verona, Italy.
Journal of Investigational Allergology & Clinical Immunology
|October 8, 1999
Summary
Allergic reactions to beer are rare but can be severe. Diagnostic tests identified barley as the specific allergen responsible for these reactions in two patients.
Area of Science:
- Allergology and Immunology
- Food Allergy Research
- Clinical Diagnostics
Background:
- Beer consumption is widespread globally, yet severe allergic reactions are infrequently documented.
- Understanding the specific allergens in beer is crucial for diagnosing and managing adverse reactions.
Observation:
- Two patients presented with severe systemic reactions following beer ingestion.
- Symptoms included anaphylaxis and generalized urticaria with angioedema, necessitating emergency medical attention.
Findings:
- Comprehensive diagnostic evaluations, including skin prick tests and specific IgE assays, were performed.
- Allergy testing pinpointed barley as the causative agent in both beer-induced allergic reactions.
- Oral challenges confirmed barley as the specific trigger for the observed hypersensitivity.
Implications:
- Barley sensitization should be considered in patients experiencing allergic reactions after consuming beer.
- Accurate diagnosis of beer allergy can prevent severe reactions and guide appropriate avoidance strategies.
- Further research into the prevalence and mechanisms of barley allergy related to beer consumption is warranted.