Leviticus 13:40-44

40“Now if a 1man loses the hair of his head, he is 2bald; he is clean. 41If his head becomes bald at the 3front and sides, he is bald on the forehead; he is clean. 42But if on the bald head or the bald forehead, there occurs a reddish-white infection, it is leprosy breaking out on his bald head or on his bald forehead. 43Then 4the priest shall look at him; and if the swelling of the infection is reddish-white on his bald head or on his bald forehead, like the appearance of leprosy in the skin of the 5body, 44he is a leprous man, he is unclean. The priest shall surely pronounce him unclean; his infection is on his head.