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Pediatr Dermatol. 2008 Mar-Apr;25(2):272-4. doi: 10.1111/j.1525-1470.2008.00653.x.

Lentigines within nevus depigmentosus: a rare collateral effect of UVB therapy?

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Department of Clinical and Experimental Medicine, Division of Dermatology (C. Varotti), University of Bologna, Bologna, Italy.


Nevus depigmentosus is an uncommon hypopigmented macule or patch that is congenital and stable in its relative size and distribution throughout life; it occurs sporadically and may be localized, segmental or, less often, systematized. We report the case of a 17-year-old girl with a segmental achromic nevus of the left leg and a patch on the lower back with late age of onset who developed lentigines after prolonged intense ultraviolet B exposure as a consequence of an incorrect diagnosis of segmental vitiligo.

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