Birthmarks can be distinguished by color, which are mainly divided into six colors: skin color birthmarks: epidermis, connective tissue nevus, sebaceous nevus; red birthmark: port-wine stain, strawberry hemangioma, flame nevus; cyan birthmark: Cyan mother spots, Mongolia spots, Ito mother spots, Ota mother spots; purple birthmarks: cavernous hemangioma, skin vein tumors; black birthmarks: moles, animal skin moles, congenital hairy melanomas, melanocytic nevus; brown Birthmarks: Baker’s mother spots, coffee milk spots.
