In the last differential diagnosis, Rowan Chase (Robert Chase's father) sometimes appears seated and sometimes standing up.
Right at the end, a man walks down steps while Chase and his father say goodbye. After Chase hugs his father in a 5-second close-up, the man continues walking from the exact same place before the hug. He should be downstairs by that time.
House orders the team to ask for thalidomide from the only leper colony in the lower 48 states. That leper colony in Carville, Louisiana, closed in 1998.
House asks Wilson for a differential regarding Chase, a "26-year-old male..." Chase should be older than that. Four years of undergrad, four years of med school, and then a few more years in a residency/internship focusing on his specialty (he's an intensivist). He'd have to be at least 29-30. Actually, he's a surgeon too. General surgery requires a 5-year residency. Dr. Chase has been a busy, busy man.
Chase junior says that the drug given for anthrax would kill the organism causing leprosy, which House follows with an explanation of antibodies acting on nerves. In reality the drugs used for anthrax (cephalosporin or penicillin group of drugs) and leprosy (rifampicin, dapsone, clofazamine) are entirely different and would not cause the effect Chase describes.
When Gabe has an allergic reaction and goes into anaphylactic shock the doctors fail to do the most common and practical thing to reverse it: administer epinephrine. It is a synthetic form of one of the components of adrenaline and temporarily reverses the acute tissue swelling caused by anaphylaxis, it should have been administered before attempting to intubate Gabe, a doctor would never try to force a tube down a swollen trachea without first administering epinephrine the way Foreman did.
Dr. Chase (younger) says that anthrax can't account for the nodules in the respiratory tract, which Dr. Chase (senior) follows by considering the possibilities of sarcoidosis and multiple neurofibromatosis. In reality anthrax itself can produce hilar lymphadenopathy and press up on the trachea (visible both in a CT scan and as reddish nodules seen while inserting a respiration tube) and produce respiratory depression. In the face of the obvious there is no need for a second diagnosis.
When asked who extubated the sick boy, Rowan said that he did. However, as an Australian doctor, it is highly unlikely that he also happens to have a medical license in New Jersey. Therefore, allowing Rowan to extubate a patient would be practicing medicine without a license. It's highly unlikely that the hospital would have allowed him to do the procedure unless it were an extremely emergency.
IRAAG: He never claimed to have done it legally or with the hospital's permission, he just said that he did it.
IRAAG: He never claimed to have done it legally or with the hospital's permission, he just said that he did it.
Chase never fills the cup he hands to Gabe. When Gabe drops the audibly empty cup, Chase replies "Don't worry about it. Water is cheap."
When House is theorizing in the last DDX, we can see House reflected in the glass in his office plus someone who isn't part of the episode, most likely a crew member.
In the final scene where Robert Chase approaches his dad outside his hotel, the viewer sees a palm tree in the background. There are no palm trees in New Jersey (filmed in southern CA).
When Chase's father theorizes that the lesions on Gabe are caused by an auto-immune issue (the immune system attacking health cells) Chase says that auto-immune disorders in a 12-year old boy are extremely rare. Yet just a few hours ago they agreed the likely cause was sarcoidosis, which is an auto-immune disorder where the immune system attacks healthy tissue in the lungs, skin and lymph nodes causing swelling and nodules to form.
When House speaks to Rowan Chase, he dissects Rowan's accent and then says, "You're Chase's dad," as if he had no prior knowledge. In the pilot, House admitted "I hired Chase because his dad made a phone call." ,,,, correction - he never says that Chase's dad called him, he could have called Cuddy.