Moles are pigment lesions, consisted of melanocytes which can be present at birth (congenital) or develop in a later phase of life. Congenital moles are very common. Most of them only represent an aesthetic problem.
Moles are darker than the rest of the skin. Most moles are a few mm in diameter and usually grow as the child is growing. A normal mole has a diameter of less than 0,5 cm, normal color on all of its size and clear border. Congenital moles have anomalous surface and darker color than [...]
If the moles develop any of the following characteristics you should consult a dermatologist: Changes in color or texture Rapid changes in size Irregular borders Bleeding or pain in the area