Port-wine stains are pink, red, or purple patches on the skin. Many such patches have a color like port wine. The patches are made of many tiny blood vessels that grow incorrectly.
Rarely, port-wine stains on a baby's face are a sign of a disorder that can cause seizures and other health problems. This disorder is called Sturge-Weber syndrome Sturge-Weber Syndrome Sturge-Weber syndrome involves an abnormal growth of small blood vessels. It is characterized by a port-wine birthmark on the face, overgrowth of blood vessels (angioma) in the tissues that... read more .