Leviticus 13:12-17

12But if the [suspected] leprosy breaks out farther on the skin, and it covers all of the skin of the one who has the outbreak—from his head to his foot—wherever the priest looks,

13the priest shall examine him. If the [suspected] leprosy has covered his entire body, he shall pronounce him clean of the disease; it has all turned white, and he is clean.

14But whenever raw flesh appears on him, he shall be unclean.

15The priest shall examine the raw flesh, and he shall pronounce him unclean; the raw flesh is unclean, it is leprosy.

16But if the raw flesh turns again and is changed to white, then he shall come to the priest,

17and the priest shall examine him, and if the diseased part is changed to white, then the priest shall pronounce him who had the disease to be clean; he is clean.