House's first differential: illnesses over patients, zebras over horses
House argues doctors treat illnesses, not people, waves off talking to the patient, and leads the team through stroke, mad cow and Wernicke's.

Every House moment featuring Robert Chase, in story order. Played by Jesse Spencer.
127 moments · 3h 22m
House argues doctors treat illnesses, not people, waves off talking to the patient, and leads the team through stroke, mad cow and Wernicke's.
A suspected reaction to the contrast dye closes Rebecca's airway mid-scan, and the team has to cut an emergency airway to save her.
With Rebecca's symptoms spreading toward the brain stem, House proposes stopping all treatment to read the disease from its speed. The team is appalled.
Instead of a court order, a simple X-ray idea is turned toward the thigh, where House is sure the worms hide. The larva shows up on film.
During the differential House claims the family history is wrong, puts money on paternity, needles Foreman into raising the stakes, and orders a sleep study.
Asked what the clean MRI shows, Chase guesses meningitis to impress; House calls it out and points to a subtle arch nobody else sees.
The spinal fluid suggests multiple sclerosis; House waves off the six-month rule and goes home, leaving the team to explain the outlook to Dan.
Confused, Dan believes he's back on his lacrosse field; Chase stops him, and Foreman explains to House why he didn't.
The roof episode rules out MS; House rates teen sex odds, polls the team on his sanity and gets the shunt answer he wanted.
With penicillin failing, House runs the team through a mnemonic he mocks for its spelling, then orders listening equipment for a talking brain.
The paternity test brings a double surprise; House confronts the parents, waves off their outrage, and asks one question about the birth mother.
House grills his team on why they care about this patient, then mocks a differential where nothing fits every symptom.
The treatment is wrecking Brandon's kidneys. Chase offers a one-in-ten-million fit; House recolors the board and does the odds for two diseases.
One doctor calls them House's puppets and heads to the lab; there Foreman and Chase spar over whether Cameron is weird or hot.
House lectures Cameron on her effect on men, catches the team trying to disprove him, and explains why taunting keeps doctors working.
Chase admits sex talk makes him uneasy and gets a vivid physiology lesson in return, and Foreman arrives with bad blood counts.
After a long silent think, House explains how a gout medicine handed out by mistake explains every symptom, then hits a timeline snag.
With four infants failing, House reads why Cuddy needs a swab team, then the team narrows a resistant hospital germ.
The antibiotics are killing the babies' kidneys; while the team argues which to drop, House decides to treat the two infants differently.
The Hartigs hear their daughter may not survive; Cameron reassures the other family, and a colleague challenges her over false hope.
Mrs. Hartig confides her fear to Chase; alarms send her running in panic, and Chase fights for the Chen-Lupino baby without success.
The failed drug points to vancomycin; House assigns Cameron the death talk, and when she freezes he accuses Chase of bailing her out.
Neither antibiotic works on the Hartig baby. Chase fears a rare resistant staph; House blames antibiotic overuse, then spots the heart clue.
Heart tissue says virus. With little blood to spare, the team crosses out families of viruses and House adds a healthy baby as a control.
The team settles on Churg-Strauss vasculitis, a gift of Christmas candy canes gets mocked, and House shuts down any suggestion he made a mistake.
After meeting the nuns, one doctor blames House's syringe, another defends him, and Chase sums up what either outcome means for the team.
Foreman and Chase argue faith over the scan, then Sister Augustine smells something that isn't there, cries out about Jesus and starts to seize.
Accused again of the wrong dose, House counts down to a sarcastic 'admission', then pivots to mixed connective tissue disease and a hyperbaric chamber.
Pumping Chase for what he knows about nuns, House offers his theory that good boys are trained by fear to obey their fathers.
Alone in a sterile room and afraid to die, Augustine is comforted by a doctor who recites his favorite scripture and admits why he quit seminary.
House looks inside the patient for the allergen; the scan reveals a decades-old copper device, which explains everything from the cookware onward.
The team mocks his interest in a schizophrenic's leg clot; House answers with ancient cures and a roll call of brilliant madmen.
Vitamin K deficiency, an antibiotic interaction or alcohol: House pits his team's ideas against each other and sends them to find out.
The team lands on a rare copper disorder, House questions their hope, and a forgotten eye appointment leads to copper rings in Lucy's eyes.
Handed a woman who sleeps 18 hours a day, House questions the referrer's motives and mocks each theory, ending with a fairy-tale diagnosis.
With no tumor found, House opts to treat symptoms, sends Foreman to Elyse's workplace, and answers his complaint with a pointed joke.
Infections are ruled out one by one until the team is left with an African parasite or an inhaled bacterium, and House praises Foreman.
Running the tests, Foreman wonders why House singles him out, and his colleagues offer a theory before weighing two risky treatments.
House cites an obscure Portuguese case of sleeping sickness passed by sex, assigns the cheating questions, then is caught having read a doctor's file.
Foreman and Chase question Ed and Elyse apart, warning that a lie could be fatal, and both insist on their love and fidelity.
Fever and failing blood pressure make the team consider stopping; Ed pleads at her side until Elyse opens her eyes.
Chase shares his own wild youth to get answers; Margo Davis reveals she secretly drug-tested her son, then Matt starts to seize.
As Matt needs his heart paced, Margo demands options; Chase offers an experimental army treatment, House needles him, and a garden becomes the suspect.
Margo says the garden spray was swapped for something organic and blocks treatment; House argues she should be overruled as irrational.
Just as treatment is about to start, a student named Chi Ling arrives with identical symptoms, and he lives nowhere near Matt.
The team compares the two families' toiletries product by product until a jug of the same detergent turns up in both homes.
Chi never washed his brand-new clothes, and a crisp label shows Matt's ratty jeans were never old at all, pointing to the clothes themselves.
Foreman wants to stick to pneumonia; House mocks him and the team floats treatable alternatives to A.L.S.
The I.V.I.G. crashes John Henry's lungs; the team freezes over the D.N.R. and House tubes him anyway.
Foreman and Cameron argue it was the patient's decision; House says he'd do it again and the debate is pointless.
House mistakes the process server for a stripper, then has the patient moved above the clinic to dodge clinic duty.
Hamilton dangles a partnership in L.A.; Foreman asks Chase and Cameron whether House's assault bothers them.
Steroids shrink the swelling and reveal a malformation compressing the spine that was there all along.
After the bite, a chin-implant patient loses her scan; Cuddy finds a pin in the arm and sends Foreman to the streets.
The biopsy confirms the tuberculoma but her fever hits 105; Foreman argues over the Prozac, then forces her into ice.
The team lists infection, lupus, drugs and cancer, and House ends the meeting on his leg's schedule.
The team tests for drugs, lupus and lymphoma; the father recalls his wife's cancer and Keith fears the same.
House shrugs off the eye, spots Cuddy's spy in Wilson, denies withdrawal and lands on a heart infection.
In Cuddy's office the team argues detox has broken him; House arrives and proposes a test dose that hurts just enough.
House picks Cameron because the dad trusts her; the team argues whether House is losing it.
Hallucinations make it lupus; Foreman says they waited too long, and Cameron admits she lied because she trusted House.
House dismisses their wish for a fixable kidney problem, bets on steroids, then dissects Foreman's car-trouble excuse.
No steroids now, no cancer; House splits the symptoms in two and argues the kidneys can carry old damage.
Wilson ducks the monster truck jam with a lecture; House's backup friend is invented; the team speculates wildly.
Hank calls trading a child for a kidney murder; the doctors argue it out, one pricing a tipping point to the day.
House roasts Foreman's freebies with a rock-star metaphor, then realises the wife has lost her sense of smell too.
Cuddy pitches a 12-year-old's odd pneumonia; House reads her silence as big donors, then runs a differential that lands on a tick bite.
Away from his parents, Gabe tells Chase about the seance and his bad luck, and Chase gets the attic secret out of him.
Chase's father spots animal hair in the attic insulation, and the team reads the CT scan until the widened mediastinum spells anthrax.
Gabe can't breathe, the tube won't pass, and Chase cuts a tracheotomy while his father watches and pleads.
Chase and his rheumatologist father clash over the rash, and House lets the room vote on which Chase wins.
Necrosis appears mid-treatment, both Chases are partly right, and House settles on treating two diseases at once.
The lesions are spreading, and House forces father and son to debate it; the proctologist jab lands on Rowan.
Chase accuses House of messing with his head; House says he cleverly has no personal life and needles him about his dad.
Chase rejects his father's diagnosis, then demands why he came, and the old wound about his mother's drinking opens up.
At the scanner, Cameron urges Chase to forgive his father; he snaps back and tells her to stay away.
House drops clues, then reveals leprosy caught from the father, and explains how the cure itself has been attacking Gabe.
House comes to talk to Chase, who lays out how years of disappointments taught him to stop caring about his father.
Gabe says he doesn't love his lying father; Chase, of all people, tells him he can't help it.
Chase offers his father a drink before his flight; they part with awkward promises to call.
Cameron steers Foreman and Chase toward her clot theory with first names and flattery; House names the technique and mocks it.
Chase and Cameron snipe on first names until Cameron argues a 'normal' sed rate could be high for Carly, and House loves it.
With every theory dead, House studies the images, notices the toes are backwards, and takes the redo away from Chase.
Cameron confides that she asked House whether he liked her, and that she likes him.
The team argues over an old head injury, the patient wakes and refuses drilling, and House overrules his team to keep him.
Back with liver failure, Joey tests positive for hep C; House argues timing with a wife and a bat, and jokes one test wins because she's cuter.
Cameron and Chase spar over the car, Joey starts bleeding, and House reads the biopsy as toxins with intent behind them.
With two hours of liver left, the team hooks Joey up to a pig to filter his blood while his brother watches in disbelief.
House traces the comas to a marshal bribed for steak, names a genetic disorder, and explains the estrogen with a herbal pill for gay men.
The team debates how a child has a heart attack; House then casually announces one of them is gone by week's end.
Jessica turns violent during a test; her mother blames the bickering doctors until House walks in with lab results.
With jobs on the line, the team snipes through clots and liposuction until diet pills come up and House calls the mother a liar.
House says the team's own treatment caused Jessica's sores; Chase suggests Cameron botched the heparin, and the blame fight boils over.
Vogler reads the chart, picks at Chase's respect for House, and pushes until Chase admits he wants his job.
Chase confronts Vogler for talking to Cameron, exposing their deal: information for protection.
House forces snap answers; obesity flips from cause to symptom, the girl's height gives it away, and the team names Cushing's.
A pituitary tumor turns up on the scan; Jessica's mother hears there's no mastectomy and how surgery will fix it all.
The team meets out of Cuddy's sight; House mocks 'idiopathic' and justifies a whole body scan with a football metaphor.
House explains the senator's immunodeficiency with a football metaphor that falls apart, and dismisses Chase's earlier idea.
The team argues preeclampsia versus weakness until House fixes on what she choked on and orders a scope and an eyelid check.
Foreman and Chase debate Naomi's choice; House calls it pure biology and says his patient is the mother.
Naomi's oxygen crashes from a clot; with her unconscious, Sean must choose between her and the baby, and picks her.
House argues the diver's neck pain doesn't fit meningitis; Cuddy gives him an hour and Chase gets the A-to-Z list.
Watching the camera pill's video, House scolds Chase for taking orders from Foreman, then spots the bleeding vessel.
Handing out pills and forms, the team runs a differential; House sniffs out a fake patient by her hair.
As Mary's seizures multiply, House ranks rival divers and swim fans as poisoners; Foreman proposes an outdated scan.
Get-well balloons lead House to ask who visited Mary. No boys did, and he wonders if the rash isn't a rash.
The rash is bleeding into the skin, and House works out the trigger: pregnancy. Mary insists she chose it; House pushes back.
Cameron is back on the team; House spots why the MRI is off-limits, and Cameron tells Chase and Foreman what her new contract got her.
House mocks Harvey's string of alternative healers, then consults a toy oracle to choose between endocarditis and a trauma aneurysm.
Foreman pulls Annette off the patient; Chase identifies her, and she calmly explains Harvey likes being strangled and what he pays her.
Chase explains how he knows Annette; Cameron and House pounce, and House scolds him for withholding the pain angle.
Harvey's mini-strokes kill the blood-thinner plan; Cameron asks how to dress, and House teases her before naming a restaurant.
Harvey spirals and refuses consent; the team sneaks Annette in to command him, he lashes out at her, and his mood swing is a new stroke.
The team finds Harvey's parents are alive and hang up; House calls back with the one lie guaranteed to bring them in.
Cameron deflects with food and garlic bread; her puffy eyes give her away, and she can't say if there will be a second dinner.
House makes Chase smell the comatose patient's breath and lays out jaw infection as the stroke source, then proves it.
The volleyball player screams at a touch; the team rattles off causes too fast for the class, and House reveals the cases are months apart.
Cancer, flesh-eating strep and an aneurysm: every story ends with possible amputation, and the room realizes the third patient was House.
The team mocks House's style and his belief in Stacy over the patient; Wilson says he's playing hero and orders him to keep his distance.
Surgery finds nothing and the team calls Mark healthy; House replays the video, enhances it, and spots the twitch nobody saw.
Searching the Warners' house, they find a teasing note from Stacy and a stash of amphetamines with a story behind them.
Foreman rules out Guillain-Barré; House pushes a long shot where the body fights nothing, and the team agrees the treatment is low risk.
Mark accuses Stacy of leaving the way she left House; mid-crisis the room calls a code, and House reads the vitals as panic.
House replays Mark's honest-looking Paris answer, then lays out a disease that leaves no fingerprints, down to the yoga.
Mark refuses House's trigger shot; Foreman, Cameron and Chase block him, House mocks the stand, and he still gets his way.
Mark convulses while the team fights over Ativan and a sample; the urine stays yellow until House adds light.