17+ Port Wine Birthmark Baby. A port wine stain (pws) birthmark, also called nevus flammeus, is a congenital, cutaneous vascular malformation. Only three in every 1,000 babies are born with the condition which occurs during pregnancy, and usually only appears on one limb or area.
A port wine stain appears when small blood vessels don't form properly near the surface of the skin.
These are yet another type of vascular birthmarks. A port wine stain is a birthmark that involves dilation of superficial and deep capillaries in the skin. A port wine stain appears when small blood vessels don't form properly near the surface of the skin. The birthmarks which are found on the forehead and eyelids usually fade significantly by the time your child is 2 years old.