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Persistent pruritic papules from deer ked bites.

T Rantanen, T Reunala, P Vuojolahti

    Acta Dermato-Venereologica
    |January 1, 1982
    PubMed
    Summary
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    Deer ked bites cause itchy, persistent skin reactions in humans. Immune responses involving IgE, complement, and cell-mediated mechanisms are implicated in these reactions.

    Area of Science:

    • Entomology
    • Dermatology
    • Immunology

    Background:

    • Deer ked (Lipoptena cervi) are blood-feeding insects that parasitize deer.
    • These insects can bite humans, leading to pruritic papules.
    • Human reactions to deer ked bites can be persistent and treatment-resistant.

    Purpose of the Study:

    • To investigate the clinical and immunological aspects of deer ked bites in humans.
    • To understand the underlying immune mechanisms involved in deer ked bite reactions.

    Main Methods:

    • Clinical examination of 19 patients with deer ked bites.
    • Histopathological analysis of skin lesions.
    • Direct immunofluorescence studies.
    • Skin testing with deer ked extract.

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  • Measurement of serum IgE levels.

    • Main Results:

    • Patients presented with itchy, persistent papules, primarily on the head and back.
    • Histology showed typical insect bite reactions.
    • Deposits of C3 were observed in dermal vessel walls.
    • Skin tests were positive in all patients, indicating allergic sensitization.
    • Elevated serum IgE levels were found in 57% of patients.

    Conclusions:

    • Deer ked bites can elicit significant cutaneous reactions in humans.
    • Immune responses, including IgE, complement, and cell-mediated immunity, play a role in the pathogenesis of these reactions.
    • Further research may inform treatment strategies for persistent deer ked bite reactions.