Port-wine stains are a kind of vascular birthmark, meaning that they’re related to the skin’s blood vessels. A port-wine stain happens when chemical signals in tiny blood vessels don’t «turn off,» and those blood vessels get bigger. The extra blood turns the skin red. Researchers found that port-wine stains start with the mutation of one specific gene.

Port-wine stains may improve with time but never disappear completely. Laser treatment is usually the best treatment for port-wine stains, especially in children.
Syneron-Candela’s Lasers can be able to destroy the capillaries without significant damage to the overlying skin.
For most people in trials of pulsed dye laser (Vbeam perfecta), more than 75% of the redness was reduced by laser after one to three treatments.