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Occupational rhinitis and asthma due to crickets.
Tania Linares1, Dolores Hernandez, Borja Bartolome
1Servicio de Alergia, Hospital Universitario La Fe, Valencia, Spain. tanialergia@hotmail.com
Summary
Crickets can cause occupational asthma and rhinitis in farm workers through an IgE-mediated mechanism. This study found significant cross-reactivity among different cricket species, highlighting a potential allergen source.
Area of Science:
- Allergy and Immunology
- Occupational Health
- Entomology
Background:
- Airborne hypersensitivity reactions can be triggered by insects, yet specific cricket allergies are infrequently reported.
- This case study focuses on a cricket farm worker experiencing occupational rhinitis and bronchial asthma.
Observation:
- A 28-year-old female worker developed respiratory symptoms linked to exposure to Gryllus campestris, Gryllus bimaculatus, and Acheta domestica.
- Diagnostic methods included skin prick tests, specific IgE assays (EAST, immunoblotting), peak expiratory flow monitoring, and bronchial challenge tests.
Findings:
- Positive skin prick tests and elevated specific IgE levels confirmed allergies to all three cricket species.
- Bronchial challenge tests indicated occupational asthma with a dual response and increased bronchial hyperresponsiveness.
- Immunoblotting revealed common IgE-binding protein patterns across species, suggesting cross-reactivity.
Implications:
- Crickets are identified as a cause of occupational rhinitis and asthma via an IgE-dependent pathway.
- Significant cross-reactivity exists among common cricket species, impacting diagnosis and management of cricket allergy.
- Awareness of cricket allergy is crucial for individuals working in cricket farming environments.
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