Halo nevus - 暈痣
References
7歲女孩的額頭上有一個黑色胎記，在過去的三個月裡，胎記周圍出現了一圈白色的環。
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.
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.
儘管 暈痣 (halo nevus) 在大多數情況下是無害的，但定期監測病變很重要。如果病灶外觀有任何變化或伴隨疼痛，應立即諮詢醫師排除黑色素瘤的可能性。
據估計， 暈痣 (halo nevus) 存在於大約 1% 的普通人群中，並且在白斑、惡性黑色素瘤或特納氏症患者中更為常見。平均發病年齡為青少年時期。