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Related Experiment Videos

Fixed long ultraviolet eruption.

E A Emmett

    Archives of Dermatology
    |February 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    A novel facial skin condition causes itchy, red, bumpy rashes triggered by long ultraviolet radiation (UV) exposure, such as sunlight or fluorescent lights. A specialized sunscreen effectively prevents this light-induced eruption.

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    Area of Science:

    • Dermatology
    • Photobiology
    • Clinical Case Study

    Background:

    • Facial skin is susceptible to various light-induced dermatoses.
    • The specific presentation described suggests a unique photosensitivity reaction.
    • Previous literature has not documented this particular clinical entity.

    Purpose of the Study:

    • To describe a previously undocumented photosensitive dermatosis affecting the face.
    • To characterize the clinical presentation and triggers of the eruption.
    • To evaluate the efficacy of UV-blocking sunscreens in managing the condition.

    Main Methods:

    • Detailed clinical observation of a 40-year-old female patient over five years.
    • Provocation testing using specific wavelengths of ultraviolet (UV) radiation (long UV vs. shorter UV).

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  • Assessment of the eruption's response to topical sunscreen application.

    • Main Results:

    • The patient presented with a chronic, itchy, erythematous, papular facial eruption with indistinct margins.
    • The eruption was consistently triggered by sunlight and fluorescent lighting, specifically long UV radiation.
    • The condition was localized to sun-exposed facial areas and could not be reproduced on the back.
    • Complete suppression of the eruption was achieved with consistent application of a broad-spectrum sunscreen absorbing long UV.

    Conclusions:

    • A distinct photosensitive facial eruption, likely induced by long-wave UV radiation, has been identified.
    • The clinical characteristics and specific UV wavelength sensitivity differentiate this condition from known photodermatoses.
    • Management with targeted UV protection, such as specialized sunscreens, is effective.