Vascular and pigmented birthmarks are two different types of entities.  Vascular birthmarks, such as hemangiomas and port wine stains, can frequently be managed with a laser.  Most hemangiomas furthermore do not need to be treated, unless they are in sensitive areas such as the eyelid or the nose.  Surgery can also be utilized for hemangiomas when there is fear of distortion or injury to important structures.   Pigmented birthmarks, on the other hand, are typically not treated with the laser, but instead, are either observed or removed surgically.