Moles are also known as evo (Nevomelanocytic nevus or Moles), medically known as melanocyte, is a local benign hyperplasia of skin melanocytes. The number, color and size of ticks increase significantly from puberty to adulthood.Moles can be divided into congenital and acquired two.

1. Congenital nevomelanocytic nevus
This type of cockroach appears on the surface of the skin more than soon after birth. Its area is large (generally larger than 1cm), it does not itch, the color ranges from light brown to dark brown, sometimes even two colors appear at the same time. The shape is circular or elliptical. Clear borders, smooth or raised surfaces that can occur anywhere on the body.

2. Acquired nevomelanocytic nevis
The cause of this type of wart is through genetics, hormonal effects or UV damage. Like congenital melanocyte sputum, its shape is round or elliptical, with a small area (generally less than 1 cm) and can occur anywhere on the body. To remove the sputum, the skin tissue can be vaporized by a carbon dioxide laser, and the skin lesions can be treated in the form of a laser thermal energy small dot matrix, which reduces the damage to the skin, accelerates the recovery of the wound, and has a lower chance of leaving a scar.