Birthmark

A persistent visible mark on the skin that is evident at birth or shortly thereafter.

A birthmark is often due to a nevus (a mole) or an hemangioma (a localized collection of small blood vessels).

Birthmarks that are pink or red are commonly capillary hemangiomas -- collections of tiny blood vessels -- that are most evident when the baby cries.

Common locations are on the midforehead, the eyelids, just above the nose, between the nose and the upper lip, and the so-called 'stork bite' on the nape of the neck.

These marks generally become harder to see or disappear entirely within a few years.