The "worst case scenario" is that prurisol works perfectly, cures psoriasis and makes you feel icky for a month? When did that news come out? Did we just skip over the question of IF it cures psoriasis and move on down to short-term side effects being the worst case scenario? I can imagine a lot of scenarios that are worse, a lot worse... such as any scenario that doesn't end with prurisol curing psoriasis. As my grandma used to say, "now you gone to meddling"