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Related Experiment Videos

Spontaneous photo-onycholysis.

R A Logan, J L Hawk

    The British Journal of Dermatology
    |November 1, 1985
    PubMed
    Summary

    Sun exposure can cause spontaneous onycholysis (nail separation). This condition, potentially linked to ultraviolet-A (UV-A) light, occurred without drug use or metabolic issues in three reported cases.

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    Area of Science:

    • Dermatology and Photobiology

    Background:

    • Onycholysis, the separation of the nail plate from the nail bed, can have various causes.
    • Idiopathic onycholysis, without identifiable triggers, is less common.

    Observation:

    • Three patients presented with onycholysis following apparent sun exposure.
    • No association with ingested medications or underlying metabolic disorders was found.
    • Standard phototesting results were normal.

    Findings:

    • The observed onycholysis appears to be spontaneous and directly related to sun exposure.
    • The action spectrum for this photo-onycholysis may involve ultraviolet-A (UV-A) radiation.
    • This represents the first documented cases of spontaneous photo-onycholysis.

    Implications:

    • Sun exposure should be considered a potential cause of spontaneous onycholysis.
    • Further research into UV-A sensitivity and nail changes is warranted.
    • Clinicians should inquire about sun exposure history in patients with unexplained onycholysis.

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