Leviticus 13:41-51 RSV

41 And if a man's hair has fallen from his forehead and temples, he has baldness of the forehead but he is clean.
42 But if there is on the bald head or the bald forehead a reddish-white diseased spot, it is leprosy breaking out on his bald head or his bald forehead.
43 Then the priest shall examine him, and if the diseased swelling is reddish-white on his bald head or on his bald forehead, like the appearance of leprosy in the skin of the body,
44 he is a leprous man, he is unclean; the priest must pronounce him unclean; his disease is on his head.
45 "The leper who has the disease shall wear torn clothes and let the hair of his head hang loose, and he shall cover his upper lip and cry, 'Unclean, unclean.'
46 He shall remain unclean as long as he has the disease; he is unclean; he shall dwell alone in a habitation outside the camp.
47 "When there is a leprous disease in a garment, whether a woolen or a linen garment,
48 in warp or woof of linen or wool, or in a skin or in anything made of skin,
49 if the disease shows greenish or reddish in the garment, whether in warp or woof or in skin or in anything made of skin, it is a leprous disease and shall be shown to the priest.
50 And the priest shall examine the disease, and shut up that which has the disease for seven days;
51 then he shall examine the disease on the seventh day. If the disease has spread in the garment, in warp or woof, or in the skin, whatever be the use of the skin, the disease is a malignant leprosy; it is unclean.