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The periungual folds, both proximal and lateral, are part of the nail apparatus and can present their own pathologies as well as those associated with multiple causes related to dermatologic, systemic, or infectious diseases, as well as drug reactions, tumors, trauma, and other causes.
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There are many entities inherent to the periungual folds, such as acute paronychia, chronic paronychia, retronychia, hangnails, hematomas of the proximal fold due to oximeter, onychocryptosis, hypertrophy of the
Diagnosis Using the Proximal and Lateral Nail Folds
Section snippets
Key points
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Conflicts: Dr P. Chang declares that she has no conflict of interest.
Financial support: none.
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