Denouement and Discussion
Ota's nevus is a disorder of pigmentation characterized by macular lesions that may be tan, brown, slate gray, blue, purple, or black in color and that resemble a mongolian spot in appearance. Involvement is usually unilateral and affects areas innervated by the first, second, and occasionally the third division of the trigeminal nerve.Approximately two thirds of the patients have scleral involvement ranging from small patchy lesions to an almost completely blue "spilt-ink" staining of the affected eye. Hyperpigmentation of the orbit and associated structures may also occur in the iris, cornea, ocular fundus, optic papilla, retrobulbular fat, periosteum of the orbital bone, or the optic nerve. Glaucoma of the involved eye has been reported.Other areas of involvement include the mucous membranes of the nose and mouth, tympanic membrane, external auditory canal, neck, and rarely the leptomeninges.It occurs more commonly in Oriental and black individuals and affects females
Gellis SS, Feingold M, Fikar CR, Ann Lee M. Picture of the Month. Am J Dis Child. 1980;134(11):1083–1084. doi:10.1001/archpedi.1980.02130230063017
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