I have not had any experience with this, because my daughter is only two, but I have had a lot of help when I contacted the experts on the front page of this website. They are very helpful, and if you attach the picture and ask them the same questions, then I bet you could find the answers you are looking for.
Here is a link to the "ask the surgeon" page (I hope it works):
Here is a link to the "ask the port wine stain expert" page:
Good luck in your search for answers!