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[Retarded bullous dermographism].

N Franco, A Scaletzky, H Cabo

    Medicina Cutanea Ibero-Latino-Americana
    |January 1, 1982
    PubMed
    Summary
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    A rare case of Bullous Delayed Dermographism, a skin condition triggered by friction, was identified in a woman with no prior allergies. Lesions appeared hours after physical stimuli, distinguishing it from other urticaria types.

    Area of Science:

    • Dermatology
    • Immunology

    Background:

    • Bullous Delayed Dermographism (BDD) is a rare condition characterized by the delayed formation of blisters following physical stimuli.
    • This case presents a unique instance in a patient with no history of allergies or urticaria.

    Observation:

    • Lesions developed 4-12 hours after friction or percussion, a hallmark of delayed dermographism.
    • The patient exhibited potential endocrine and psychological predisposing factors.
    • Histopathological examination revealed non-specific features.

    Findings:

    • BDD was differentiated from bullous and pressure urticaria based on clinical presentation, absence of allergic history, and delayed lesion onset.
    • The mechanism involves a friction-induced response distinct from simple pressure, with no evidence of immunoglobulins in subepidermal blisters.

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    Implications:

    • This case highlights the distinct clinical and etiological characteristics of Bullous Delayed Dermographism.
    • Further research into the endocrine and psychological factors may elucidate the pathogenesis of BDD.
    • Understanding BDD's unique features is crucial for accurate diagnosis and differentiation from other physical urticarias.