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Dear Dr. Cory:
What is a birthmark? Robin P. * Natrona Heights, Pennsylvania
Dear Robin:
Birthmarks appear on the skin at birth or shortly afterwards. They may be shades of red, brown, or black. Doctors do not know what causes most birthmarks, and no one has discovered a way to prevent them. They are not caused by anything that the mother did or did not do during pregnancy. Some people don't have any birthmarks. Others have several.
--This text refers to an alternate Digital edition.
