After the break, Foreman exposits that Nick's heart is fine but his temperature keeps dropping. He'll die of hypothermia soon. Taub exposits that House isn't answering his phone. Hadley says they must have been wrong about the infection. Whatever is really wrong with Nick, it's still causing brain damage. I hope that doesn't mean that Nick had a ridiculously risky brain surgery for no reason. What a poor showing by House and the Cottages this week. No one has any idea what could really be wrong with Nick, so Foreman orders a full body scan even though House apparently hates those, except in all the episodes where he orders them. Taub doesn't want to do the scan either, saying it'll show a bunch of meaningless anomalies that everyone has floating around his body, and they'll waste a lot of time investigating them. It's better than nothing, though, so Popsicle Nick gets his scan.
A nervous Wilson waits to see his brother. Mercy's psych waiting room is pretty much the most depressing place ever, all dimly-lit and full of gross furniture. House gets Wilson a cup of coffee in an uncharacteristically considerate move. Then again, the last time he gave Wilson coffee, it was full of speed. Be careful, Wilson. Wilson says the last time he saw his brother was 13 years ago (when he mentioned the brother back in Season 1, he said he disappeared 9 years ago, so this works), when he happened to walk past a deli where Wilson was eating lunch. Apparently, it was a huge deli with all sorts of obstacles between Wilson's table and the door, because by the time Wilson made it outside, his brother was gone. This also explains why Wilson works at PPTH -- he knew his brother was in the Princeton area, and when House told him there was an opening at PPTH, he jumped at the chance to take it and continue looking for his brother. With that, House's phone comes alive with the sounds of his Hanson ringtone. He doesn't answer, saying the Cottages already texted him to say they were doing something stupid.
Sure enough, Nick's body is full of anomalies and the Cottages have to examine and rule out. Foreman spots what could be a vascular malformation in Nick's liver and says multiple AVMs causing problems with Nick's blood flow would explain all of his symptoms. The solution? They'll have to scan Nick's entire vascular system looking for malformations and fix them all, providing that he doesn't freeze to death first.
Kumar texts House with the update on Nick, but his overzealous spellcheck has interpreted his medical terms as "cyclone in the floral of his lungs." I have a feeling that line was in there just to express the frustration of the writing staff at their own computers' overzealous spellchecker. Anyway, House still wants to know why Wilson took a walk without his coat on. He thinks Wilson was trying to see what it would be like to be homeless in a New Jersey winter because he feels guilty about his brother. He figures Wilson thinks he has something to feel guilty about. He sure does! It turns out that Daniel is schizophrenic, and starting showing symptoms as a teenager. But with meds, he managed to keep it together enough to get into college. Meanwhile, Wilson was in med school getting phone calls from his brother every day and talking to him for hours that he didn't have. One night, Daniel called crying and upset. But Wilson had to study for an exam, so he hung up on him and went to the library. House can guess where this is going: the next day, Momma Wilson called to say that Daniel ran away from school, leaving his meds behind. Without the meds, Wilson says, Daniel could never be able to choose to come back to his family. I want to know what miracle drug Daniel was on that made him that okay considering how totally removed from reality he apparently was without it. The writer of this episode, Doris Egan, might want to read up on schizophrenia when she isn't busy making every single episode of House she writes about House and Wilson's ridiculously unrealistic friendship or getting her sister cast on the show. At least she isn't obsessed with Hadley like all the other writers. House says Wilson tried to be selfish one time and it backfired on him horribly. Ever since then, he's been determined to do everything for everybody. Thus explaineth the character of Wilson. House chalks his entire being up to an "overreaction over a single event," but only says that so he can have his epiphany. He says Wilson just hung up the phone. It's not like everything was hunky-dory in Daniel's life until that moment. And Daniel was overreacting, too. Although not so much, since he kind of couldn't help it. Don't be like Wife and blame people for reactions they can't control, House. Also, what happened to Wilson's other brother and his parents? Why aren't they here for visiting hours? House then has his epiphany, as promised. "His glucose was normal," he says. Wilson realizes that House's limited attention span just ran out. As House dials his team, Javier comes out to let Wilson in to see his brother. House misses the chance to go with him and be a supportive friend. Shocking.