Leviticus 13:31

And if the priest should see the plague of the scurf, and, behold, the appearance of it be not beneath the skin, and there is no yellowish hair in it, then the priest shall set apart [him that has] the plague of the scurf seven days.

And if the priest look on the plague of the scall, and, behold, it be not in sight deeper than the skin, and that there is no black hair in it; then the priest shall shut up him that hath the plague of the scall seven days:

If the priest examines the plague of itching, and behold, its appearance isn’t deeper than the skin, and there is no black hair in it, then the priest shall isolate the person infected with itching seven days.