Halo naevi
Halo nevi are not risky or infectious, but they are sometimes a mark that something is wrong with the skin.
Halo naevi, also known as leukoderma acquisitum centrifugum. Halo nevi are common benign skin lesions that represent melanocytic nevi in which an inflammatory infiltrate develops, resulting in a zone of depigmentation surrounding the nevus. They appear as one or more uniformly colored, evenly shaped, round or oval nevi centrally with even peripheral margins of hypopigmentation. The central nevus may be tan, pink, or brown.
