Leviticus 13:30

then the priest shall see the plague; and if it looks deeper than the skin and the hair in it is yellowish and thin, then the priest shall pronounce him unclean; it is a dry scall, leprosy of the head or beard.

Leviticus 13:34-37

And in the seventh day the priest shall look on the scall; and if the scall is not spread in the skin nor in appearance deeper than the skin, then the priest shall pronounce him clean; and he shall wash his clothes and be clean.

Leviticus 14:54

This is the law for all manner of plague of leprosy and scall

Treasury of Scripture Knowledge

Summary

Then the priest shall see the plague: and, behold, if it be in sight deeper than the skin; and there be in it a yellow thin hair; then the priest shall pronounce him unclean: it is a dry scall, even a leprosy upon the head or beard.

Bible References

Scall

Leviticus 13:34
And in the seventh day the priest shall look on the scall; and if the scall is not spread in the skin nor in appearance deeper than the skin, then the priest shall pronounce him clean; and he shall wash his clothes and be clean.
Leviticus 14:54
This is the law for all manner of plague of leprosy and scall