Leviticus 13:44-46
44 the man is diseased and is unclean. The priest shall pronounce him unclean because of the sore on his head.
45 “The person with such an infectious disease must wear torn clothes, let his hair be unkempt, cover the lower part of his face and cry out, ‘Unclean! Unclean!’
46 As long as he has the infection he remains unclean. He must live alone; he must live outside the camp.