it is a chronic skin disease and the priest shall pronounce them unclean. He is not to isolate them, because they are already unclean.
References for Leviticus 13:11
“If the disease breaks out all over their skin and, so far as the priest can see, it covers all the skin of the affected person from head to foot,
the priest is to examine them, and if the disease has covered their whole body, he shall pronounce them clean. Since it has all turned white, they are clean.
But whenever raw flesh appears on them, they will be unclean.
When the priest sees the raw flesh, he shall pronounce them unclean. The raw flesh is unclean; they have a defiling disease.
References for Leviticus 13:15
If the raw flesh changes and turns white, they must go to the priest.
The priest is to examine them, and if the sores have turned white, the priest shall pronounce the affected person clean; then they will be clean.
References for Leviticus 13:17
“When someone has a boil on their skin and it heals,
References for Leviticus 13:18
and in the place where the boil was, a white swelling or reddish-white spot appears, they must present themselves to the priest.
References for Leviticus 13:19
The priest is to examine it, and if it appears to be more than skin deep and the hair in it has turned white, the priest shall pronounce that person unclean. It is a defiling skin disease that has broken out where the boil was.
References for Leviticus 13:20
But if, when the priest examines it, there is no white hair in it and it is not more than skin deep and has faded, then the priest is to isolate them for seven days.