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Related Experiment Videos

[Primula dermatitis].

H Yasuda, M Kumakiri, Y Miura

    [Hokkaido Igaku Zasshi] the Hokkaido Journal of Medical Science
    |November 1, 1983
    PubMed
    Summary

    This study reports on ten Hokkaido patients with primula dermatitis, all showing positive patch tests to Primula obconica extract. Recurrent cases featured prominent postlesional pigmentation and characteristic epidermal changes.

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    Area of Science:

    • Dermatology
    • Allergology
    • Toxicology

    Background:

    • Primula dermatitis is an allergic contact dermatitis caused by compounds in plants of the Primula genus.
    • Primula obconica is a common houseplant known to cause allergic reactions.

    Observation:

    • Ten cases of primula dermatitis were observed in Hokkaido.
    • All patients exhibited positive patch test reactions to an extract of Primula obconica.
    • Recurrent cases were characterized by prominent postlesional pigmentation.

    Findings:

    • Histological examination revealed liquefaction degeneration of the basal epidermal layer.
    • Incontinentia pigmenti (lichenoid tissue reaction) was a notable histological finding.

    Implications:

    • Positive patch tests confirm Primula obconica as a significant allergen in this region.
    • Understanding histological features aids in diagnosing and managing primula dermatitis.
    • The prevalence of postlesional pigmentation highlights the chronicity and impact of recurrent exposure.

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