But if, after the person was examined by the priest and declared clean, the scab spreads at all on the skin, the person shall once more be examined by the priest.
When someone has on the skin a mark, lesion, or blotch which appears to develop into a scaly infection, the person shall be brought to Aaron, the priest, or to one of the priests among his sons.
Should the priest, upon examination on the seventh day, find that it has spread at all on the skin, he shall declare the person unclean; it is a scaly infection.
Should the priest, upon examination again on the seventh day, find that the infection is now faded and has not spread on the skin, the priest shall declare the person clean; it was merely a scab. The person shall wash his garments and so become clean.