By Gary M. White, MD

The nevus of Ito (NI) is a congenital dermal pigmentation occurring on the back. More than 50% are present at birth, and most of the remaining appear around puberty.


A unilateral, asymptomatic, blue, gray or brown patch on one side of the back is characteristic.


The Q-switched ruby laser or other pigment removing laser may be used.


Bilateral nevus of Ito and nevus spilus in the same patient JAAD August 2008 Volume 59, Issue 2, Supplement, Pages S51–S5


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