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Overview


A halo nevus is a lesion with a centrally placed nevus surrounded by a white halo of depigmented (loss of pigment) skin. It is most commonly seen in adolescence, but can be observed at any age. Over a period of months to years, the halo nevus gradually involutes and disappears, often leaving a residual white patch.

Cause

The trigger or cause of spontaneous pigment loss in a halo nevus is not known; however, pigment loss is the result of an immunologic process in which melano...Read the full article