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Bindii (Jo Jo) dermatitis (Soliva pterosperma [Compositae]).

C Commens, A McGeogh, B Bartlett

    Journal of the American Academy of Dermatology
    |May 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    Bindii dermatitis, a skin rash in Australian children, is caused by bindii seed exposure. Testing confirmed bindii seed pricking reproduces the characteristic rash, suggesting an allergic reaction.

    Area of Science:

    • Dermatology
    • Pediatrics
    • Allergology

    Background:

    • Bindii dermatitis presents as a distinct skin eruption in Australian children.
    • The condition is characterized by erythematous papules with puncta, primarily on the palms, soles, and knees.
    • It typically occurs during the spring and early summer months.

    Purpose of the Study:

    • To investigate the causative agent of bindii dermatitis.
    • To determine the pathogenesis of this specific skin condition.
    • To differentiate between an allergic reaction and a foreign body response.

    Main Methods:

    • Intradermal skin pricking with bindii seed was performed on affected children and controls.
    • Lesional reactions were observed and documented within 48 hours.

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  • Clinical presentation and reaction patterns were compared between groups.
  • Main Results:

    • Three children with bindii dermatitis developed an erythematous, indurated papule within 48 hours of bindii seed pricking.
    • Control subjects (thirteen) did not exhibit similar reactions.
    • The induced lesion mimicked the primary clinical presentation of bindii dermatitis.

    Conclusions:

    • The findings suggest bindii seed is the direct cause of bindii dermatitis.
    • Pathogenesis likely involves an allergic reaction to retained bindii seed antigen.
    • This contrasts with a simple nonspecific foreign body injury reaction.