Interesting point, didn't occur to me that if HIV knocks out the immune system, then the overactive immune system that can cause psoriasis WOULD be less likely to cause psoriasis. However, 104 cases expected and 7 occurring -- that's quite a huge difference.

But, before bashers seize upon this, again, no way Leo would have been posting about big money deals for psoriasis drugs, if he weren't mighty certain that it wouldn't come back to bite him.