Leviticus 13:40

37 But if in his eyes the scall be at a stay, and black hair be grown up therein; the scall is healed, he is clean: and the priest shall pronounce him clean.

38 When a man or a woman has in the skin of the flesh bright spots, even white bright spots;

39 then the priest shall look; and, behold, if the bright spots in the skin of their flesh be of a dull white, it is a harmless rash, it has broken out in the skin; he is clean.

40 If a man`s hair be fallen off his head, he is bald; [yet] is he clean.

41 If his hair be fallen off from the front part of his head, he is forehead bald; [yet] is he clean.

42 But if there be in the bald head, or the bald forehead, a reddish-white plague; it is leprosy breaking out in his bald head, or his bald forehead.

43 Then the priest shall look on him; and, behold, if the rising of the plague be reddish-white in his bald head, or in his bald forehead, as the appearance of leprosy in the skin of the flesh;