Can you spot diagnose this?
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A: Nevus of Ota
Nevus of Ota is a hamartoma of dermal melanocytes. Its onset can be early infancy or early adolescence. It is usually unilateral but can have bilateral blue or grey patch on the face, within the distribution of the ophthalmic and maxillary branches of the trigeminal nerve.
What do you need to look out for?
Regular eye review is required due to higher risk of development of glaucoma and malignant melanoma.