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August 1964

Postirradiation Melanonychia

Author Affiliations


From the Department of Dermatology, University of Pennsylvania School of Medicine (Drs. Shelley and Pillsbury); from the Clinical Research Center, Hospital of the University of Pennsylvania (Dr. Rawnsley).

Arch Dermatol. 1964;90(2):174-176. doi:10.1001/archderm.1964.01600020042009

An unusual case of temporary melanin pigmentation of the fingernails is reported following superficial irradiation therapy of a hand dermatitis.

Melanin can be differentiated from hemoglobin both chemically and microscopically.

The clinical significance of melanonychia is reviewed.

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