These birthmarks are red or pink in color and vary greatly in size and location. These birthmarks are made of the cells that form blood vessels and lymphatics and are usually filled with blood or lymph that gives the red-blue color.
Some Hemangiomas may appear as a white patch immediately after birth, but within a week will begin to expand turn deep red. These birthmarks enlarge in infancy but often will completely shrink by early childhood. These hemangiomas may need no treatments or may require lasers or surgery.
These lesions do not develop cancer but can be a problem is located near important areas of the body. In particular some lesion around the eyelids, mouth and neck may require early treatment.