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Related Experiment Videos

Factitious urticaria: red dermographism

R P Warin

    The British Journal of Dermatology
    |March 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    A distinct skin reaction to minor injury, characterized by redness and swelling, was identified. This condition, unlike typical dermographism, presents as a palpable, wealed band upon rubbing or skin stretching.

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    Area of Science:

    • Dermatology
    • Cutaneous reactions

    Background:

    • Superficial skin trauma can elicit various reactions.
    • Ordinary dermographism is a well-characterized response to skin scratching.

    Purpose of the Study:

    • To describe a novel skin reaction to superficial trauma.
    • To differentiate this reaction from ordinary dermographism.

    Main Methods:

    • Observation and clinical description of a specific skin reaction.
    • Testing the reaction's elicitation through rubbing and skin stretching.
    • Comparison with the response to standard scratching used for dermographism.

    Main Results:

    • A distinct reaction characterized by an erythematous band with diffuse wealing was observed.

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  • This reaction was more readily induced by rubbing and skin stretching than by scratching.
  • Forty patients exhibited this reaction, and it was present in 3% of normal subjects.

    • Conclusions:

    • A unique cutaneous response to superficial trauma, distinct from ordinary dermographism, has been identified.
    • The reaction involves an erythematous band with palpable, diffuse wealing upon specific stimuli.
    • Further investigation into the pathophysiology and clinical significance of this reaction is warranted.