Halo nevus (also known as "Leukoderma acquisitum centrifugum," "Perinevoid vitiligo," and "Sutton nevus") is a mole that is surrounded by a depigmented ring or 'halo'.
一名7岁女孩的额头上有一个黑色胎记，过去三个月里，胎记周围出现了一圈白色环。 A 7-year-old girl presented with a blackish birthmark on her forehead, which had gotten a white ring around it over the past three months.
虽然晕痣 (Halo nevus) 在大多数情况下是良性的，但仍需定期监测。如病变外观出现变化或伴有疼痛，应及时就医，以排除黑色素瘤的可能。
据估计，晕痣 (Halo nevus) 约占普通人群的1%，在白癜风、恶性黑色素瘤或特纳综合征患者中更为常见。发病高峰通常在青少年时期。