a reddish purple birthmark most commonly seen in the upper parts of the face. The mark is due to congenital malformation of the capillaries near the skin surface in the affected area. The mark can resolve with flashlamp laser treatments. More than one treatment is required but the earlier in life the treatments begin the less the number of treatments required. If left untreated the skin surface can become cobblestoned & bleed easily when touched. Once the cobblestones appear it is much more difficult to ever achieve a smooth evenly pigmented skin surface.