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Related Experiment Videos

Physical urticarias

T Mahmood1

  • 1UMDNJ-New Jersey Medical School, Newark.

American Family Physician
|May 1, 1994
PubMed
Summary
This summary is machine-generated.

Physical urticaria, a common form of chronic hives, is triggered by various agents causing mast cell release. Identifying the specific physical trigger is crucial for effective treatment of these often short-lived, but sometimes severe, skin reactions.

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Area of Science:

  • Dermatology
  • Allergy and Immunology

Background:

  • Chronic urticaria encompasses various conditions, with physical urticaria accounting for approximately 20% of cases.
  • Physical urticaria involves mast cell mediator release triggered by external stimuli.
  • Common forms include dermographism and cholinergic urticaria, representing over two-thirds of physical urticaria cases.

Purpose of the Study:

  • To summarize the characteristics of physical urticaria.
  • To emphasize the importance of identifying causative agents for effective management.

Main Methods:

  • Review of existing literature on physical urticaria.
  • Analysis of common triggers and clinical presentations.

Main Results:

  • Physical urticaria is triggered by diverse agents, with dermographism and cholinergic urticaria being most prevalent.

Related Experiment Videos

  • Urticarial reactions are typically reproducible and short-lived (under one hour).
  • Severe episodes may present with systemic symptoms like flushing, dizziness, headaches, and hypotension.

    • Conclusions:

    • Accurate identification of the physical agent responsible for urticaria is essential for successful therapeutic intervention.
    • Understanding the varied triggers and presentations of physical urticaria aids in patient management.