Their sweat has been altered to dissolve a certain substance (silver, hair, paper, whatever).
They are carriers of a disease that weakens, but doesn't kill. A bad cold?
Their skin/hair/eyes change color daily.
Their aura (or odor) freaks animals and small children.
Their skin is now made up of tiny scales.
They attract every biting insect within 500 feet.
Their muscles have a different attachment than normal people. When they move, it is obvious where there is bare skin (such as the face).
They are carriers of a disease that weakens, but doesn't kill. A bad cold?
Their skin/hair/eyes change color daily.
Their aura (or odor) freaks animals and small children.
Their skin is now made up of tiny scales.
They attract every biting insect within 500 feet.
Their muscles have a different attachment than normal people. When they move, it is obvious where there is bare skin (such as the face).
