Leviticus 13:40-44

40“If a man loses the hair of his head, he is bald, but he is clean.

41Or if he loses the hair at his hairline, he is bald on his forehead, but he is clean.

42But if there is a reddish-white condition on the bald head or forehead, it is a serious skin disease breaking out on his head or forehead.

43The priest is to examine him, and if the swelling of the condition on his bald head or forehead is reddish-white, like the appearance of a serious skin disease on his body,

44the man is afflicted with a serious skin disease; he is unclean. The priest must pronounce him unclean; the infection is on his head.