What are Port-wine Stains?
Port wine stains are discolorations of the skin caused by a capillary malformation or vascular anomaly. They are name due to the unique color they present that is similar to red wine.
A port-wine stain is almost always a birthmark, and in rare cases it can develop in early childhood. Either way, port-wine stains ordinarily persist throughout life. The area of skin affected grows in proportion to general growth