Blemishes in the skin are usually either pink/red or brown/black. The latter are pigmented blemishes or moles. The redder ones may be composed of blood vessels in or under the skin. Most skin blemishes of this nature are harmless, but one should seek advice if they change, either in colour, size, or shape; also if they become symptomatic, for example if they start to itch. Some skin blemishes can be examined by dermatoscopy, looking at the skin close up with a special instrument and thereby additional information obtained in relation to the nature of the blemish. Benign moles or other blemishes can be treated in a number of ways such as freezing, laser, or surgery.