Leviticus 13:39-42
English Standard Version
40"If a man 's hair falls out from his head, he is bald; he is clean.
41And if a man 's hair falls out from his forehead, he has baldness of the forehead; he is clean.
42But if there is on the bald head or the bald forehead a reddish-white diseased area, it is a leprous disease breaking out on his bald head or his bald forehead.