Bilateral Ota naevus

Abstract

We present the case of a 22-year-old woman, who had presented since the age of 15 a pale-blue spot spread on the right-hand side of her forehead and in her bulbar conjunctiva (first and second branches of the trigeminus nerve), consistent with Ota naevus. A few years later another with similar characteristics appeared on the other side of her forehead, cheek and sclera. No deafness, neurological defect nor visual loss were detected. We comment on the rarity of this case because the patient is Caucasian and also we explain the main complications derived of this disease and consider the therapeutic options.

Bilateral naevus of Ota in a pregnant white woman

“…Finally, and in agreement with our previous experience, 8 it is necessary to follow a double approach in white patients with naevus of Ota. Close follow‐up is needed to control the risk of malignant transformation.…”

Contralaterally spreading type III nevus of Ota in a white person

“…The triangular fashion, which spread contralaterally, probably corresponds to an ectopic nerve fibre belonging to the right trigeminus, along which the abnormal migration of melanoblastic cells took place during embryogenesis. Thus, in our opinion the present case should be considered an atypical variant of type III NO, and not of type IV, as previously also reported in white people 4,5 …”

Don’t it make my blue eyes brown: heterochromia and other abnormalities of the iris

“…73 Oculodermal melanocytosis is usually a unilateral, although sporadic cases of bilateral involvement have been reported in the literature. [82][83][84][85][86][87][88] The vast majority of cases of ocular or oculodermal melanocytosis are sporadic in nature and only rarely have familial cases been reported in the literature. [89][90][91][92] Clinically, oculodermal melanocytosis is characterised by a bluish-grey pigmentation 88 involving areas of skin innervated by the first and the second divisions of the trigeminal nerve.…”