Leviticus 13:27
When the priest examines it on the seventh day and finds that it has indeed spread on the skin, then the priest is to declare him unclean. It's an infectious skin disease.
Treasury of Scripture Knowledge
Summary
And the priest shall look upon him the seventh day: and if it be spread much abroad in the skin, then the priest shall pronounce him unclean: it is the plague of leprosy.
It is the plague of leprosy
General references
Bible References
It is the plague of leprosy
Leviticus 13:2
"When a person has a swelling or a scab in the skin on his body that turns white in appearance and appears to be more extensive than skin deep, he is to be brought to Aaron the priest or to one of his sons among the priests.
General references
Leviticus 13:7
But if the scab did spread in the skin after he presented himself to the priest for cleansing, then he is to show himself a second time to the priest.
Leviticus 14:39
He is to return after seven days to examine it. If the contagion has spread to the walls of the house,