Leviticus 13:10

But if the scab spreads on the skin after he has shown himself to the priest for his cleansing, he shall show himself to the priest again.

The priest shall examine him; and behold, if the scab has spread on the skin, then the priest shall pronounce him unclean. It is leprosy.

“When the plague of leprosy is in a man, then he shall be brought to the priest;

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

“If the leprosy breaks out all over the skin, and the leprosy covers all the skin of the infected person from his head even to his feet, as far as it appears to the priest,

then the priest shall examine him. Behold, if the leprosy has covered all his flesh, he shall pronounce him clean of the plague. It has all turned white: he is clean.