Leviticus 13:24-25

Or if there is a burn on the skin of the flesh, and if the diseased flesh in the burn becomes a bright place, red and white or white, The priest is to see it: and if the hair on the bright place is turned white and it seems to go deeper than the skin, he is a leper: it has come out in the burn, and the priest will say that he is unclean: it is the leper's disease.