"Go see Stacy," Cuddy says. I hope you enjoyed that line, because it's all Cuddy's getting this week! She does get to say it, like, fifteen times in two different and exciting scenes, though. House assaulted a patient, and therefore will need a lawyer -- a constitutional lawyer, since patient assault is apparently detailed in one of those pesky later amendments no one ever reads. House says that he doesn't need a lawyer, because the guy isn't his patient, and House didn't assault him. "Go see Stacy," Cuddy repeats.
After all that fuss, Stacy's advice is for House to treat the guy so that he won't sue, even though, truthfully, House really didn't assault him and has a witness who will agree, not to mention the fact that the anaphylactic shock was caused by something else entirely, unless the guy is allergic to Volvos or something. With nothing resolved on the possible-lawsuit front, House asks Stacy why he's meeting her in her house, with Mark conveniently absent. I was hoping it was because Stacy had murdered Mark and needed House to come over to help her conceal the crime, but no, Stacy's just waiting for the exterminator to show up: she saw a rat last night and was barely able to sleep for fear that the rat would suddenly grow to human size and eat her once her eyes where closed. House makes a classy little comment about how Stacy never had trouble sleeping after a round of sex with him, as he starts washing Stacy's dishes in an effort to appear charming and chivalrous. He offers to take care of the rat problem too, but Stacy says she has it under control. The ex-couple huddles at the sink, washing and scrubbing away, until Mark wheels in. "It's not what you think!" House says. "I know it looks like we're cleaning dishes, but actually we're having sex!" Though it conjures up a disturbing mental image, I loved that line and the way Hugh Laurie said it. Mark is predictably angry and wheels out. Stacy follows him, telling House as she leaves the room just to treat the guy to prevent the lawsuit. I'm going to assume Stacy and Mark are headed to the nearest Sears to buy a freaking dishwasher already.
Kalvin Ryan is the name of our patient. House thinks it's a boring old open-and-shut AIDS complication case, but obviously, it isn't because we still have lots of time left in this episode. The Cottages, who actually bother to read patient files, tell House that all tests for infections were clear, and that Kalvin's T-cell count has actually increased from thirty-five to an adequate infection-fighting two hundred since he changed his medicine. Kalvin should be fine. Foreman grins in the face of House being wrong that this is a routine case, but House has a theory that explains everything and yet will still be totally wrong: Kalvin's new meds could have kicked off an autoimmune disease. He orders the Cottages to do a chest x-ray to find whatever old infection Kalvin had that this autoimmune response is now trying to fight, and to put Kalvin on steroids just because.