Albert Barnes Commentary Leviticus 13:30

"then the priest shall look on the plague; and, behold, if the appearance thereof be deeper than the skin, and there be in it yellow thin hair, then the priest shall pronounce him unclean: it is a scall, it is leprosy of the head or of the beard." — Leviticus 13:30 (ASV)

Scall - As this is the name for another disease not allied to leprosy, it would have been better to retain the original word נתק netheq. It is a true elephantiasis, and is recognized by modern writers under the name of the Fox mange.