'Scab' in the Bible

“When a man has on the skin of his body a swelling or a scab or a bright spot, and it becomes an infection of leprosy on the skin of his body, then he shall be brought to Aaron the priest or to one of his sons the priests.

The priest shall look at him again on the seventh day, and if the infection has faded and the mark has not spread on the skin, then the priest shall pronounce him clean; it is only a scab. And he shall wash his clothes and be clean.

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

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

and for a swelling, and for a scab, and for a bright spot—

“The Lord will smite you with the boils of Egypt and with tumors and with the scab and with the itch, from which you cannot be healed.