Our sages were attracted to the notion that the the skin disease known as tzara’at was a punishment for a specific sin or moral failing, particularly malicious speech. Yet this idea is not present in the biblical text where no reason for the illness can be discerned.
Instead of considering the meaning of the illness or the guilt of an afflicted individual, the Torah focuses on proper diagnosis and treatment by a qualified professional — the priest.
If tzara’at is confirmed, the metzora (the person afflicted with tzara’at) must move out of the camp (presumably lest they infect others).
The priest visits the metzora every seven days to track the progress of their condition, and once he has ascertained that the tzara’at has definitely ended, the priest supports the metzora through several ritual steps back into normal life.