The Torah makes it very clear that the plague of Tzaraas (“Leprosy”) that afflicts one who speaks lashon ha’ra, is not a natural occurrence, but rather a Divine retribution that is meant to punish the sinner. His only recourse is to absolve himself of this disease through repentance and a sincere effort to distance himself from his sin. The sooner he does t’shuvah, the sooner the plague will go away, and no medication, ointment, or healing remedy will have any effect on his ailing body, since this disease is not a natural one. This, says the Alshich HaKadosh zt”l, is the deeper understanding of the pasuk: “And behold, the tzaraas affliction has been healed…from the m’tzora.” In other words, it is up to the m’tzora to rid himself of this plague through t’shuvah – not through medicinal or restorative means.