
Halo naevus.Halo naevus, Sutton naevus, naevus regrediens. An autoimmune phenomenon in which a pigment naevus is gradually and spontaneously destroyed. At the same time, the pigment around the naevus also disappears, but may return over time.
Picture: Raimo Suhonen; text: Raimo Suhonen and Leena Koulu