Leviticus 13:40-43

40“As for the man whose hair has fallen from his head, he is bald, but he is clean.

41He whose hair has fallen from his forehead, he is bald on the forehead, but he is clean.

42And if there is on the bald head or bald forehead a reddish-white sore, it is leprosy breaking out on his bald head or his bald forehead.

43Then the priest shall examine it; and indeed if the swelling of the sore is reddish-white on his bald head or on his bald forehead, as the appearance of leprosy on the skin of the body,