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Solange Rodrigues-Valle1, Guilherme Azizi, Sérgio Duarte-Dortas

  • 1Universidad Federal de Río de Janeiro, Hospital Clementino Fraga Filho, Departamento de Inmunología Clínica, Río de Janeiro, Brasil. azizi.ufrj@gmail.com.

Revista Alergia Mexico (Tecamachalco, Puebla, Mexico : 1993)
|June 21, 2021
PubMed
Summary

TempTest® accurately diagnoses cold and heat urticaria by measuring temperature variations. This reliable method helps patients avoid dangerous temperature exposures.

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Efficacy of omalizumab in chronic spontaneous urticaria associated with chronic inducible urticaria.

Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology·2020
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Area of Science:

  • Dermatology
  • Allergology
  • Medical Devices

Background:

  • TempTest® utilizes the Peltier effect for diagnosing cold and heat urticaria.
  • It measures temperature variations and disease activity in patients.

Purpose of the Study:

  • Analyze TempTest® results in patients with urticaria factitia (UFr) and cold urticaria (UCal).
  • Evaluate a new diagnostic method at a GA2LEN UCARE center in Rio de Janeiro.

Main Methods:

  • Retrospective analysis of 12 patients diagnosed with UFr or UCal.
  • Temperature provocation tests using TempTest® for five minutes.
  • Positive response defined by a 2-mm-papular lesion within 10 minutes.

Main Results:

  • Three patients had heat urticaria, and nine had cold urticaria.
  • Heat urticaria patients tested positive with TempTest®.
  • Cold urticaria patients tested positive at 27°C or lower.

Conclusions:

  • TempTest® is a reliable instrument for diagnosing and monitoring temperature-related urticaria.
  • Determining temperature thresholds aids in preventing patient exposure to triggers.
Keywords:
Cold urticariaHeat urticariaProvocation test

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