Greyscale is a disease that can leave flesh stiff and dead and the skin cracked and flaking, mottled black and grey and stone-like to the touch. The tongue and lips turn to stone. It generally affects children especially in cold damp climates. The victims are disfigured but could not be touched by the rarer mortal form of the affliction or the grey plague. The wildlings consider people who survive Greyscale unclean.