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Related Experiment Videos

Anaphylaxis to raw potato.

J L Beausoleil1, J M Spergel, N A Pawlowski

  • 1Division of Immunologic and Infectious Diseases, The Children's Hospital of Philadelphia, PA 19104, USA.

Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology
|February 24, 2001
PubMed
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A 4-year-old experienced severe anaphylaxis from raw potato, distinct from Oral Allergy Syndrome (OAS). Skin tests confirmed reactivity to fresh, but not commercial, potato extract, highlighting a unique presentation of potato allergy.

Area of Science:

  • Food allergy research
  • Pediatric immunology
  • Clinical diagnostics

Background:

  • Potato allergy is rarely documented, often linked to Oral Allergy Syndrome (OAS).
  • OAS in adults with allergic rhinitis can manifest as oculonasal symptoms or urticaria from raw potato contact.
  • Commercial potato extract sensitivity may not fully represent fresh potato allergenicity.

Observation:

  • A 4-year-old presented with immediate anaphylaxis after ingesting raw potato.
  • Symptoms included urticaria, angioedema, respiratory distress, vomiting, and diarrhea.
  • The child had no prior symptoms of seasonal allergic rhinitis, unlike his mother who has OAS and raw potato contact urticaria.

Findings:

  • Skin testing showed a positive reaction to fresh potato (prick + prick) but a negative reaction to commercial potato extract.

Related Experiment Videos

  • The patient exhibited clinical reactivity to raw potato without OAS.
  • A cooked potato challenge was negative, indicating specificity to raw potato.

    • Implications:

    • This case suggests raw potato can cause anaphylaxis independent of OAS.
    • Diagnostic approaches for potato allergy may need to include fresh potato testing.
    • Further monitoring is warranted for potential development of seasonal allergic rhinitis.