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A case of cold-dependent exercise-induced anaphylaxis.

M Ii1, K Sayama, M Tohyama

  • 1Department of Dermatology, Ehime University School of Medicine, Shigenobucho, Ehime 791-0295, Japan.

The British Journal of Dermatology
|August 14, 2002
PubMed
Summary

This study describes a case of exercise-induced anaphylaxis (EIA) triggered by cold exposure, not food. This cold-dependent EIA may represent a distinct clinical entity.

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Area of Science:

  • Allergy and Immunology
  • Dermatology
  • Exercise Physiology

Background:

  • Exercise-induced anaphylaxis (EIA) is a rare condition characterized by allergic reactions during or after physical activity.
  • It is often associated with food triggers, but other factors can also be involved.

Observation:

  • A 16-year-old male experienced recurrent urticaria (wealing) and dyspnea (shortness of breath) after winter exercise.
  • Symptoms were not linked to food ingestion, specifically wheat or soya bean.
  • A provocation test combining exercise with cold stimulation elicited localized skin reactions.

Findings:

  • Cold exposure, rather than food ingestion, was identified as the essential trigger for EIA in this patient.
  • The patient's condition differed from typical cold urticaria and food-dependent EIA.

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  • The findings suggest cold-dependent EIA might be a unique subtype of physical urticaria.

    • Implications:

    • This case highlights the importance of considering cold as a trigger for exercise-induced anaphylaxis.
    • Further research is needed to understand the pathophysiology and classification of cold-dependent EIA.
    • Clinical management may require specific strategies to address cold exposure in susceptible individuals.