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Related Experiment Videos

Recidivous acute urticaria caused by Anisakis simplex

A Montoro1, M J Perteguer, T Chivato

  • 1Servicio de Inmunología y Alergologia, Hospital del Aire, Madrid, Spain.

Allergy
|November 14, 1997
PubMed
Summary

Anisakis simplex is the primary cause of recurring acute urticaria in individuals who consume seafood but are not allergic to fish. This parasitic infection triggers allergic reactions, leading to hives in susceptible patients.

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Area of Science:

  • Allergy and Immunology
  • Parasitology
  • Dermatology

Background:

  • Recurrent acute urticaria is a common condition, often with an unidentified cause.
  • Seafood consumption is frequently reported by patients experiencing these allergic reactions.
  • Parasitic infections, particularly from Anisakis simplex, are increasingly recognized as potential triggers.

Purpose of the Study:

  • To investigate the role of Anisakis simplex infection in patients with acute recurrent urticaria who consume seafood.
  • To identify specific allergic responses to Anisakis simplex in this patient cohort.

Main Methods:

  • Skin prick testing with Anisakis simplex larval extract.
  • Measurement of total and specific IgE antibodies against Anisakis simplex using CAP System.

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  • Determination of specific antibodies to Anisakis simplex via ELISA and Western blot.

    • Main Results:

    • Nineteen out of twenty-five patients exhibited specific IgE antibodies to Anisakis simplex.
    • Skin prick tests were positive in 16 patients, indicating allergic sensitization.
    • Only one patient showed sensitization to fish, suggesting Anisakis simplex as the primary allergen.

    Conclusions:

    • Anisakis simplex is identified as the main etiological agent of acute recurrent urticaria in seafood-consuming patients without fish sensitization.
    • Diagnostic testing for Anisakis simplex should be considered in patients with unexplained recurrent urticaria and a history of seafood intake.
    • This finding highlights the importance of considering parasitic infections in the differential diagnosis of allergic skin conditions.