Birthmark
A birthmark is a mark on skin that some people are born with. nevus|congenital melanocytic nevi, and port-wine stains.
A birthmark was once thought of as the mark of the devil, and today it is often considered a birth defect. In some cases this mark is considered to be the mark of God applied to his chosen few
Birthmark Media
Port-wine stain visible on the head of Mikhail Gorbachev, one of the most famous individuals with such a birthmark