Port Wine Stain

**Semantic type:** Disease or Syndrome

**Definition:** A congenital vascular malformation in the skin (birthmark) characterized by the presence of dilated capillaries. The affected area of the skin is flat and reddish-purplish in color.

**Synonyms:** - Nevus Flammeus - Port Wine Birthmark - Port Wine Nevus - Port Wine Stain of Skin - Port Wine Stain of the Skin - Port Wine Type Hemangioma - Port-Wine Stain of Skin - Salmon Patch Nevus