<unk>  is a congenital disorder characterized by macules of varying size and shape that are paler than the surrounding skin and cannot be made red by trauma, cold, or heat. The paler area is due to the blood vessels within the area which are more sensitive to the body’s normal vasoconstricting chemicals.
Nevus anemicus
Hypertrichosis cubiti
Nevus oligemicus
Woolly hair nevus
Blue nevus
Dermatosis papulosa nigra
Nevus flammeus nuchae
Nevus depigmentosus