'Scab' in the Bible

When a man shall have in the skin of his flesh a rising or a scab, or bright spot, and it become in the skin of his flesh a sore as of leprosy, then he shall be brought unto Aaron the priest, or unto one of his sons the priests.

And the priest shall look on him again the seventh day, and behold, the sore is become pale and the sore hath not spread in the skin, then the priest shall pronounce him clean; it is a scab; and he shall wash his garments and be clean.

But if the scab have spread much in the skin, after that he hath been seen by the priest for his cleansing, he shall be seen by the priest again;

and the priest shall look on him, and behold, the scab hath spread in the skin; then the priest shall pronounce him unclean: it is leprosy.

and for the rising, and for the scab, and for the bright spot,

Jehovah will smite thee with the ulcers of Egypt, and with boils, and with the scab, and with the itch, whereof thou canst not be healed.