Character mistake: Episode 6.12, Moving The Chains: Marcus tells House that he and Eric were arrested for stealing a car, he was 16 and Eric was 14. He also says that his brother never did anything criminal after that. In season 1, we were told that Eric was 16 when he was arrested for stealing a car.
Factual error: House is playing 'Metroid: Zero Mission' on his Gameboy at various times. The Metroid series does not feature space monkeys, nor are there distinct levels. The sounds coming from the game in the show do not match it in real life, and Samus morphing into a ball is most definitely not a failure state.
Continuity mistake: As House describes the lady's symptoms, in the front shot Chase has a small book/pamphlet in his hand. The camera changes to a side shot in the middle of House's description and suddenly the book is on the table and no longer in Chase's hand. This happens right in the middle of House's line and Chase doesn't make any quick movements to account for this discrepancy.
Continuity mistake: As Cuddy is making the deal with House, how much time off from Clinic duty for a week off his vicodin, while the camera is behind Cuddy you can see there is bright sunshine on House's head. The shot switches to a camera behind House and now his head is shaded.
Continuity mistake: House is about to inject Ezra Powell (Joel Grey) with what is supposedly a lethal dose of morphine. In the shots where they pan out to show House addressing the room at large, the syringe is very full, almost completely. When they zoom in on House holding the syringe, it is only filled a fraction of that much - maybe a quarter to a third. This doesn't happen just once, but every time they switch between shots.
Visible crew/equipment: In the scene where House and Allison are walking down the stairs, they round a corner and we see a dolly shot down a short hall with a glass wall in front. During this shot, a camera, cameraman, and dolly are visible in reflections on the glass.
Factual error: In episode 414, "Living the Dream," the patient Evan is given a nerve function test. We see Kutner and Taub performing the test by puncturing Evan's legs with needles. Modern nerve function tests actually rely on electrical impulses from a small computerized device, with no needles necessary.
Revealing mistake: Exactly ten minutes to the end, the couple with the baby Maxine are waiting to hear how she is doing. The mom and the husband are sitting on a bench outside the room in which their daughter is being treated. The mom lies down on her husband. She is supposed to have given birth only recently, so she still has a big tummy. As she lies against her husband, however, it is clear that she is wearing a prosthetic stomach: her blue T-shirt tucks and crinkles into and around it in a way that shows it is not an organic part of her.
Continuity mistake: During the scene where Dr. Chase and Dr. Cameron are out having a drink, Cameron picks up Dr. Foreman's cell phone. Before she does she takes a drink of her soda. This drink drops the level of drink to half full. When Foreman returns a few seconds later she suddenly has a glass that is 3/4 full. There was no time for anyone to give her a refill.
Plot hole: When Wilson does an ultrasound to check for cancer in Alex' ovaries he fails to notice the fact that she doesn't have a uterus. If he mistook her bladder for her uterus, which sometimes happens, she would have appeared to be missing her bladder instead. Yet Wilson doesn't pick up on anything being missing.
Factual error: House's team listed the potential offending organisms of the infection as "MRSA, H. Flu, VRE, and pseudomonas." House then suggests Vancomycin and Aztreonam. Vancomycin only covers gram (+) organisms and Aztreonam only covers gram (-) organisms. VRE is a gram (+) organism, thus it would not be covered by Aztreonam. VRE stands for vancomycin resistant enterococcus, thus it would not be covered by Vancomycin either. House's team therefore failed to cover for an offending organism that could have caused the infection during their initial differential.
Factual error: When House is looking over his whiteboard of symptoms for the swimming patient, the symptom "Intercranial Hemorrhage" is shown on the board. However, this is an error. The correct term is "Intracranial Hemorrhage." Anything inside the head is referred to as "intra" not "inter." This is a common mistake for laypeople, however the highly trained and knowledgeable Dr. House should not have made that error.
Continuity mistake: When the young swimmer is about to dive, you get a close-up of both her heels going over the edge. Then, it shows a further shot with only one heel over the edge. Later in the same scene, the girl is underwater and you see her hair flowing around her face. When she lifts her head out of the water, her hair is tied up.
Plot hole: In the scene with Mikey in the NICU, the alarms start to go off, stating that he is in distress. The nurse screams "He's in V-fib!" and everyone rushes around him. In the next shot they show the heart monitor just before Chase shocks Mikey's heart. The problem is that the heart rate is so fast with one wide complex that it would actually be Supraventricular Tachycardia with 1 Premature Ventricular Contraction (SVT with 1 PVC), which is far less serious than V-fib and wouldn't require the heart to be shocked.
Factual error: A kid is being taken to surgery to remove a magnet he swallowed because it may be stuck in his upper intestine. House diagnoses that the magnet is already in the lower intestine by taking a scalpel and showing that it's magnetically attracted to the lower abdomen. Surgical scalpels are made of high grade stainless steel and are not attracted by magnets.
Deliberate mistake: When a patient who is given CPR is seen in the shot, the person giving the CPR does so with bent arms (the correct way to do it is with straight arms). This is deliberate, as straight-arm CPR puts in an amount of strength that frequently breaks ribs. Many films do CPR with bent arms rather than straight to avoid harming the actor.
Audio problem: When Foreman comes to inform the patients parents that the surgery to relieve inter-cranial pressure was successful, the mother asks "What happened? Did she hit her head at a meet or...?" The coach's audio responds with, "No, nothing like that," but the words don't correspond to his mouth movements.
Continuity mistake: In the beginning of the episode, when Cuddy presents the case to House, she has her cell phone in her left hand when handing him the file. She doesn't have it in her hand when she slides the file closer to him. When the camera faces her, you can see her arms are bent up while talking to him, and see the phone. When the camera is facing House, Cuddy's arms are hanging down by her sides, no phone.
Continuity mistake: Becca, the pregnant woman, says that Cuddy must be mad at her for having been a drug addict and possibly causing her baby's lungs to be underdeveloped. While she's talking, her right hand is rubbing her belly. In the close up, the hem of her hospital gown just barely reaches the middle of her tummy. In the immediate next shot, it is much further to the right side.
Continuity mistake: Throughout both parts of season 4's finale ("House's Head" and "Wilson's Heart"), Amber is always shown getting hit from the back and sitting facing House, so her seat's back is to the windows. Yet the last time we see the accident, that is, right after she took the flu pills, she is definitely sitting neatly sideways to the window (i.e. the seat is perpendicular to it) and getting hit from the right side. It most likely was done for artistic reasons, as the back shot, shown multiple times, makes for a very neat effect, with her blonde hair flowing around her like sunrays.
Factual error: There are several episodes where doctors continue to defibrillate a patient even after s/he flatlines. A flatline (asystole, where there is no electrical activity in the heart) cannot be corrected by defibrillation, which stops a heart that's in an abnormal rhythm and gives it a chance to start in a normal one (the heart has already stopped when there is a flatline).
Continuity mistake: At the start of the episode, when 13's date falls off the bed, she knocks the bedside lamp onto the floor. As 13 runs to the bedroom, the lamp is laid on its side on the bedside cabinet. As 13 bends down to attend to her date, the lamp is back on the floor.
Character mistake: The girl who admits to changing Chase's profile says that what she is doing is negative reinforcement when it is actually positive punishment. Negative reinforcement involves taking something away (eg a noise) to encourage the behaviour whereas positive punishment involves adding something (the pictures) to discourage future behaviour.
Continuity mistake: Right at the end, when House is apologizing to Wilson, watch the bright spot on the TV frame on the wall behind House. In the long shots, the spot is right at the top left corner of the TV. In the close-up shots, the spot is closer to the middle. This is visible every time the shot changes from long to close-up. Light spots do not move depending on the position if the viewer. The only way a light spot changes is if the light source changes position or the reflecting surface changes position (try reflecting a flashlight beam off a mirror and then, leaving the flashlight and the mirror alone, move around. The reflected spot of light will not change position).
Plot hole: Since the doctors do not know the identity of the patient, Cole and Thirteen are given the car keys they found on the man and instructed to go to the area where he was found and try it in every car door. When House calls them, Thirteen says, "His car was towed and the tow gate's locked." House tells them to break in to the car impound. Given the only way for them to identify the car was using the keys, if the car's been towed away then it wasn't there for them to try the key in the first place.
Continuity mistake: The runaway has an attack when her mother shows up and coughs blood on the table. There is an emesis basin at the far end of the table she throws up on. The shot changes twice and now there is FAR more blood on the table and the basin has moved to the middle of the table. Before the first shot change, Taub is reaching for the basin, however, after the change he is moving away without enough time to move the basin. The shot changes again and the patient is now in the bed with Adams holding the basin under her mouth. There is not enough time in that shot change for her to move from the foot of the bed to in the bed.
Other mistake: At the end, before House's "realisation" the camera pans out and shows a street light when House and Wilson are outside talking. The lamp top is covered with fresh snow. It's been dark for sometime. The heat from the bulb would have melted snow had it actually been real.
Plot hole: The doctors tell House that blood tests did not show anything wrong with the teenage boy, but near the end of the episode, he realises that it is naphthalene poisoning. Naphthalene poisoning is something that is easily noticed by doctors through blood tests.
Deliberate mistake: When extubating the patient from the respirator, the patient would have been sedated as to not cause discomfort or pain so they can die peacefully. Furthermore, the ET tube is seen being taken out, but it cuts so the actor can hold it in his mouth without choking, but in real circumstances, it's not nearly long enough to go down the trachea.
Continuity mistake: House is in the cafeteria eating chips with Adams discussing a case. Park walks up and gives Adams a cup of coffee. The cup of coffee disappears and reappears during the whole scene. The coffee is in front of Adams, then isn't. Towards the end the coffee is far to the side rather than where it originally was set.
00:17:10 - 00:18:45
Continuity mistake: When Dr. Cameron is walking with Dr. Charles to go for a procedure, he barely has any facial hair before they enter the stairwell, but once they reach the stairwell his facial hair has increased quite a bit. His hair is also parted to the left prior to entering the stairwell and once in the stairwell it is parted on both sides.
Continuity mistake: A third of the way into the show when Hadley and House are arguing while walking out of House's office, Hadley's necklace watch is backwards and out of the top of her blouse. When they stop walking and switched to a shot of House then back to Hadley, her necklace watch is right-side front and inside the top of her blouse.
Factual error: In an episode with a severely overweight patient who is thought to have diabetes, it is discovered he instead has Chagas disease. Cameron then informs the patient that he acquired this illness from his food when, in fact, Chagas disease is a protozoan that is spread through the bite of the triatomine bug.
Factual error: The boy plays a game of chess at a tournament against some other person. The camera only shows a few pictures of the board, however, when the boy says "goodbye" and the game ends, due to an allegedly checkmate, the following is shown: the opponents king is on f7, with his own figures all around but e8 and h7-9 being free. On h5 is the boy's rook which attacks the h7, h8 and h9 fields. Now the boy moves his bishop to h6, thus attacks f7 (where the king is) and e8 (the only free spot but h6-8). Now of course h6, f7 and e8 are not available to the king anymore, but as the bishop blocks the rooks attack on the h-line, the king now has the fields h7 and h8 to go to. Thus it's by no means "checkmate."
Continuity mistake: During the scene in which House is offering up liquor-flavored ice cream he sets the containers in a row down the table 1-2-3-4-5. He then puts spoons in the three containers closet to Foreman, 1-2-3. The shot changes and before anyone touches the spoons they are now in containers 1, 2, and 4.
Character mistake: House says to Chase "I've got a dead baby for you to biopsy." A biopsy is a test performed on tissue from a living patient. He should have said 'autopsy' - the procedure performed on a dead person to determine how they died. House, as a doctor, would know this distinction.