The Art and Science of Beautiful Skin.
Typically moles develop after birth. But about 1 percent of people are born with a mole, called a Congenital Mole or Nevus. These moles vary in size, and increases a person’s risk of developing skin cancer.
Also see Atypical Mole above, and our article: What to Look for When Evaluating Skin Moles
For more information, visit the American Academy of Dermatology at www.aad.org/skin-conditions