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Contact dermatitis from Primula obconica Hance.

L Fernández de Corres, I Leanizbarrutia, D Muñoz

    Contact Dermatitis
    |April 1, 1987
    PubMed
    Summary
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    Contact dermatitis from Primula obconica Hance is increasingly diagnosed, with a significant rise in incidence observed after introducing a primula extract into standard patch testing. Many patients showed sensitization, indicating a notable allergen.

    Area of Science:

    • Dermatology
    • Allergology
    • Toxicology

    Background:

    • Contact dermatitis is a common skin condition.
    • Primula obconica Hance is a flowering plant known to cause allergic reactions.
    • Identifying causative allergens is crucial for effective management.

    Purpose of the Study:

    • To report cases of contact dermatitis caused by Primula obconica Hance.
    • To assess the diagnostic yield of an ether extract of Primula obconica Hance in patch testing.
    • To evaluate the sensitization potential of Primula obconica Hance.

    Main Methods:

    • Retrospective case series analysis.
    • Patch testing with an ether extract of Primula obconica Hance.
    • Follow-up patch testing in a subset of patients.

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    Main Results:

    • Fifteen cases of contact dermatitis to Primula obconica Hance were identified (14 female, 1 male).
    • The incidence of positive patch tests increased significantly after incorporating the primula extract.
    • Doubtful reactions were observed in 19.6% of tested patients, and active sensitization was confirmed in 5 of 20 retested individuals.

    Conclusions:

    • Primula obconica Hance is a significant cause of allergic contact dermatitis.
    • The use of an ether extract of primula in patch testing enhances diagnostic accuracy.
    • Delayed sensitization to Primula obconica Hance is possible.