Port-wine stain
Definition A port-wine stain, also called naevus flammeus, is a benign change of the skin, which takes on a dark red to reddish-purple color. The fire stain also owes its appearance to the widespread name “port wine stain”. This congenital malformation of the smallest vessels, so-called capillaries, is one of the rare malformations and can … Port-wine stain