Leviticus 13:8-12

And the priest shall look, and if the rash has spread on the skin, then the priest shall pronounce him unclean; it is leprosy.

“When the infection of leprosy is on someone, then he shall be brought to the priest.

The priest shall then look, and if there is a white swelling on the skin, and it has turned the hair white, and there is new raw flesh in the swelling,

it is a chronic leprosy on the skin of his body, and the priest shall pronounce him unclean; he shall not isolate him, for he is unclean.

If the leprosy breaks out farther on the skin, and the leprosy covers all the skin of the person who has the infection from his head even to his feet, as far as the priest can see,