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Food-dependent exercise-induced anaphylaxis to pistachio.

S Porcel¹, A B Sánchez, E Rodríguez

¹Allergy Department, Complejo Hospitalario de Cáceres, Cáceres, Spain. seporcel@yahoo.es

Journal of Investigational Allergology & Clinical Immunology

|April 8, 2006

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A teenager experienced anaphylaxis after eating pistachios and exercising. This rare case of food-dependent exercise-induced anaphylaxis to pistachio was diagnosed via a specific food exercise challenge test.

Area of Science:

Allergy and Immunology
Exercise Physiology

Background:

Food-dependent exercise-induced anaphylaxis (FDEIA) is a rare condition.
Diagnosis can be challenging due to negative standard allergy tests.

Observation:

A 16-year-old male presented with anaphylaxis post-pistachio ingestion and football.
Standard allergy tests (skin prick, IgE) for pistachio were negative.
Exercise challenges without food were also negative.

Findings:

A specific food exercise challenge, 60 minutes after pistachio ingestion, triggered anaphylaxis.
This confirmed pistachio as the trigger for FDEIA in this patient.
This is the first reported case of FDEIA specifically to pistachio.

Implications:

Related Experiment Videos

Highlights the importance of specific food exercise challenges for diagnosing FDEIA.
Suggests non-IgE mediated mechanisms may be involved in some FDEIA cases.
Expands the spectrum of known food triggers for exercise-induced anaphylaxis.