These are multiple, small, discrete, confetti-like white spots, not a ring of depigmentation around a central mole.
This is a scaly, hypopigmented patch caused by a fungus, which can be confirmed by a KOH test, unlike the non-scaly halo around a nevus.
Vitiligo can depigment around a mole, but it typically forms larger patches of depigmentation elsewhere, whereas a halo nevus is a localized phenomenon around a single lesion.
This presents as atrophic, porcelain-white plaques, a different morphology than the depigmented macule surrounding a nevus.
