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Halo Naevi

Dr van Geel and researchers have looked at how halo naevi ( a common mole with a white ring around, showing the sort of pigment loss that is seen in vitiligo) can present together with vitiligo or separately (Br J Dermatol 2011; 164: 743-9). Their results support the theory that halo naevi can represent a distinct condition but in a subset of patients, the occurrence of halo naevi may be an initiating factor in the pathogenesis of vitiligo.