What is a mole? What kind of mole is it?

Everyone will have a mole, which is formed by the abnormal increase and accumulation of melanin particles secreted by melanocytes or melanocytes in the skin. For example, common moles are formed by the accumulation of increased melanocytes into nests or spheres; However, in Ota nevus and freckle nevus, there are many scattered melanocytes, which can present different colors due to different distribution depths.

There are many kinds of nevus, the most common ones are localized nevus (divided into borderline nevus, intradermal nevus and mixed nevus according to the depth), in addition to giant nevus (congenital melanocyte nevus with a huge area), halo nevus (skin around melanocyte nevus in hypopigmentation), simple freckles (nevus), freckles (appearing in exposed parts such as face and darkening brown after sun exposure), brown and milk spots (appearing light brown spots at birth).