The priest will examine the sore on the skin of his body. If the hair in the sore has turned white and the sore appears to be deeper than the skin of his body, it is in fact a serious skin disease. After the priest examines him, he must pronounce him unclean.
‘When a person has a swelling, scab, or spot on the skin of his body, and it may be a serious disease on the skin of his body, he is to be brought to the priest Aaron or to one of his sons, the priests.
But if the scab spreads further on his skin after he has presented himself to the priest for his cleansing, he is to present himself again to the priest.
‘Command the Israelites to send away anyone from the camp who is afflicted with a skin disease, anyone who has a discharge, or anyone who is defiled because of a corpse.