What specific types of moles are there?

Following forms can be distinguished:
congenital mole (congenital nevus): This mole is already present at birth or occurs in the first year of life. Congenital moles in size, shape and appearance very different. Sometimes they are hairy. Congenital nevi should be closely monitored or operated, as it slightly more likely than ordinary moles may be cancerous.
"Ordinary" mole (nevus): It is a less than five millimeters wide, staining and limited regular spot. Most people with white skin have more of these moles. The average number is in the Northern European population from 30 to 40 pieces. 
Sublime this small nodule is also staining and shows a terrible surface. Often grow one or more hairs from this birthmark. These moles are many people for a cosmetic problem, as is often perceived as annoying hair. This should, however, truncated and not from torn, since otherwise the mole may ignite.
Unusual birthmark: This mole is often difficult from a malignant mole (melanoma) to differ. It is larger than five millimeters, flat or elevated, has different colors and irregular is limited. Some people have more than 100 of these nevi. There are also families in which these moles occur frequently. People with such moles should regularly by dermatologists examine, because they carry a higher risk of a melanoma to get.
Blue birthmark (blue nevus): This mole falls by blue-gray in color, it can be flat or elevated.