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Birthmarks are areas of discolored and/or raised skin that are apparent at birth or within a few weeks of birth. Birthmarks are made up of malformed pigment cells or blood vessels. About 10 in every 100 babies have vascular birthmarks (birthmarks made up of blood vessels).
Although the cause of birthmarks is not known, most of them are benign (non-cancerous) and do not require treatment. Babies with birthmarks should be examined and diagnosed by a physician.
The following are the most common types of vascular birthmarks: