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Allergy to pine nuts in children

N Rubira1, J Botey, J L Eseverri

  • 1Allergy and Clinical Immunology Dept., Hospital Universitario Materno-Infantil Valle de Hebron, Barcelona, Espana.

Allergie Et Immunologie
|November 21, 1998
PubMed
Summary
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Pine nut allergy can cause severe reactions in children, often linked to other nut allergies. Diagnostic tests like skin prick tests and specific IgE serum tests confirm this IgE-mediated hypersensitivity.

Area of Science:

  • Clinical Immunology
  • Pediatric Allergy
  • Food Hypersensitivity

Background:

  • Nut allergies are prevalent, yet pine nut allergy is infrequently reported in medical literature.
  • This study investigates four pediatric cases of pine nut allergy.

Observation:

  • Patients ranged from 12 months to 6 years old, with a history of atopy.
  • Three out of four children experienced severe systemic reactions upon pine nut ingestion.
  • Two children also had documented allergies to other tree nuts.

Findings:

  • Skin prick tests and specific IgE serum tests were positive in all four patients, confirming IgE-mediated hypersensitivity.
  • An oral provocation test was positive in the single case where it was performed.
  • Clinical symptoms were consistent with immediate hypersensitivity reactions.

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Implications:

  • Commercial pine nut prick tests demonstrate high sensitivity and specificity for diagnosis.
  • Increased pine nut consumption in certain regions may lead to a higher incidence and earlier onset of allergic reactions.
  • Early diagnosis and management are crucial for children with suspected pine nut allergy.