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No. A port wine stain is a birthmark created by malformed and dilated blood vessels.
The port wine stain is a benign tumor just under the surface of the skin, made up of overabundant blood vessels (angiomas).
An estimated 13 percent of individuals with SWS will not have the port wine stain.
In addition, some children with port wine stain may not have Sturge-Weber syndrome.
Sometimes the port wine stain covers other parts of the body as well as the face.