He's lying down in a display bed at the mattress store, where Wilson is back looking for the mattress that he wants. House thinks aloud about Evan's case, bouncing ideas off of Wilson. So much for doctor-patient confidentiality. I wouldn't be happy if my doctor was yelling out facts about my case in the middle of a retail store. Wilson has an idea for House: He wants a waterbed. Do they ... even sell those anymore? I had a friend growing up who had a waterbed, and we all thought it was awesome except that it had all these rules. You could barely move on it for fear of popping the mattress and flooding the house. I do love how ashamed Wilson is of his own desires, as he says he's always wanted to be "rocked to sleep in water." He braces himself for House's mocking, which he's assuming will include saying that Wilson's waterbed desire has something to do with wanting to crawl into a big vagina. Why would that be anyone's desire? Talk about claustrophobia. House decides that Wilson's waterbed desire is "too sad" for mocking and continues his diagnosis instead. Wilson decides not to get the waterbed, as it would require special sheets and stuff. House tells him to shut up; stores apparently sell waterbeds and waterbed sheets, so Wilson should just go out and get one. Wilson says he can't be like House and indulge his every whim. Well, no, but when you're making doctor bucks and have always wanted a waterbed, I don't see the problem with getting one. As for House, he just got an idea about Evan from the floral comforter he's lying on. He tells Wilson that his waterbed desire is stupid but he should "live the dream" and takes off.
House tells Foreman that he's got the case all figured out: Evan's symptoms were caused by an allergy and not an infection, which is why he isn't responding to antibiotics. Foreman is dubious, especially since none of Evan's symptoms match that of an allergic reaction. For real, House. It's called a rash and watery itchy eyes. I'm allergic to cats, but I've never suffered kidney failure around them. That I know of, anyway. House says allergies could trigger "allergic vasculitis." Hooray! Vasculitis is so awesome. It pops up in the most unlikely of places and causes virtually any symptom! Foreman says this would be highly unlikely. One in a million odds, in fact. The reasonable thing to do is to keep treating and testing Evan for a septic reaction, which explains all of Evan's symptoms just fine. House says that if it is allergic vasculitis then the antibiotics won't help Evan at all and he'll die. He saw chrysanthemums in Evan's dressing room, which contain a known allergen. Yeah, but ... Evan isn't in his dressing anymore. Wouldn't the allergic reaction go away? Actually, wouldn't he have some kind of allergic reaction that went along with the allergic vasculitis? Okay, I'll stop. TV isn't real. House wants to give Evan steroids for the allergic vasculitis, but Foreman says that could kill Evan if House is wrong and it really is an infection. He thinks they should at least test if Evan is allergic to chrysanthemums before treating him. Of course, House says they don't have time to wait for tests. I don't know why not. The scratch test takes like ten minutes and Evan's in a coma, so he's not going anywhere.