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Related Experiment Videos

Contact dermatitis from propolis.

B Wanscher

    The British Journal of Dermatology
    |April 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Contact dermatitis from propolis (bee glue) can cause persistent facial eczema and mouth sores. Patch testing confirmed propolis allergy in two patients, highlighting its potential as a hidden allergen in skin products.

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    Area of Science:

    • Dermatology
    • Allergology
    • Natural Products

    Background:

    • Propolis, a natural resinous mixture produced by bees, is known for its potential therapeutic properties.
    • However, its complex composition, including sensitizing agents from poplar trees, can lead to adverse reactions.
    • The anti-inflammatory effects attributed to flavonoids may mask its allergenic potential.

    Observation:

    • Two patients presented with recalcitrant perioral eczema and stomatitis.
    • Standard patch tests, including balsam of Peru, were negative.
    • Propolis allergy was suspected and subsequently confirmed through patch and provocation tests.

    Findings:

    • Positive patch tests to propolis preparations were observed in both patients.
    • Recurrence of lesions after provocation testing in the second patient confirmed propolis as the causative agent.

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  • Absence of reactions to standard European patch tests suggests specific sensitization to propolis components.

    • Implications:

    • Contact dermatitis due to propolis should be considered in cases of unexplained eczemas, particularly around the mouth.
    • The potential for cross-reactivity with balsam of Peru warrants further investigation.
    • Increased awareness is needed as propolis is incorporated into various topical products, including ointments and cosmetics.