Scientists discover cause of port-wine stain birthmarks

May 9, 2013

And also another condition called Sturge-Weber syndrome.

It's a related condition that often leads to lifelong struggles with blindness, seizures and mental disabilities.

Scientists say it's a single random change to a single gene after conception that causes both of these conditions.

They add that this discovery now means that doctors can immediately move on to the idea of what to do about it , instead of just treating the symptoms.

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