Fuente: PubMed "wine" Pediatr Dermatol. 2026 Mar-Apr;43(2):458-459. doi: 10.1111/pde.70196.ABSTRACTA port-wine birthmark is a flat, red or purple birthmark. It happens when tiny blood vessels in the skin don't form the way they should. You might also hear it called a port-wine stain, nevus flammeus, or capillary malformation.PMID:41937274 | DOI:10.1111/pde.70196