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.
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#differential diagnosis
68 moments.
House's plan: stop everything and watch how fast she dies
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.
Ham at her apartment: House exposes Wilson's lie and finds the tapeworm
A detail from the break-in proves the patient isn't Wilson's cousin and points House to a pork tapeworm in her brain, which he explains with relish.
House bets his team the father isn't the father
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.
Chase bluffs, House sees the bowing in the corpus callosum
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 team splits over MS and Dan hears what it means
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.
Not MS after all: House pushes neurosyphilis and a risky injection
The roof episode rules out MS; House rates teen sex odds, polls the team on his sanity and gets the shunt answer he wanted.
Back to square one with the MIDNIT mnemonic
With penicillin failing, House runs the team through a mnemonic he mocks for its spelling, then orders listening equipment for a talking brain.
Why this patient? House takes the ER case after a stairwell check
House grills his team on why they care about this patient, then mocks a differential where nothing fits every symptom.
House argues two diseases beat one in an Occam's razor showdown
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.
Epidemic differential: House explains Cuddy's sick baby
With four infants failing, House reads why Cuddy needs a swab team, then the team narrows a resistant hospital germ.
House orders a trial: one drug off each baby
The antibiotics are killing the babies' kidneys; while the team argues which to drop, House decides to treat the two infants differently.
From an autopsy slide to eight vials: hunting a virus
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.
Churg-Strauss, candy canes and House's verdict on nuns
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.
House's mock confession countdown and the hyperbaric gamble
Accused again of the wrong dose, House counts down to a sarcastic 'admission', then pivots to mixed connective tissue disease and a hyperbaric chamber.
House defends a boring blood clot with Galen, Socrates and Pink Floyd
The team mocks his interest in a schizophrenic's leg clot; House answers with ancient cures and a roll call of brilliant madmen.
Three theories race to explain a patient who clots and bleeds
Vitamin K deficiency, an antibiotic interaction or alcohol: House pits his team's ideas against each other and sends them to find out.
A forgotten eye appointment and copper rings crack Lucy's case
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.
House asks why this case, then skewers his team's differential
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.
The breast clue: House points the team to paraneoplastic syndrome
After a seizure and a clean MRI, House steers to a family history of breast cancer, and the team explains how a tumor can confuse the immune system.
Sleeping sickness or rabbit fever: two lousy ideas win the day
Infections are ruled out one by one until the team is left with an African parasite or an inhaled bacterium, and House praises Foreman.
House pins the parasite on an affair and admits pulling a colleague's records
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.
House doubts Foreman's motives and sends him to find the kid's stash
House assumes a teenager's collapse is drugs, mocks Foreman for caring, floats a legal toner high, and sends him to search the house.
House tastes the suspect tomato sauce to make a point
Disappointed by sauce instead of designer drugs, House eats a spoonful of the possibly tainted jar, then steers the team to pesticides.
An army antidote, a British jab and a garden theory
As Matt needs his heart paced, Margo demands options; Chase offers an experimental army treatment, House needles him, and a garden becomes the suspect.
The antidote backfires and House reworks the poisoning timeline
Matt seizes as his mother screams at the doctors; then House works out the boys were poisoned at home and quizzes the team on teen morning habits.
Foreman runs the differential while House picks apart the A.L.S. call
Foreman wants to stick to pneumonia; House mocks him and the team floats treatable alternatives to A.L.S.
House is served a restraining order mid-differential
House mistakes the process server for a stripper, then has the patient moved above the clinic to dodge clinic duty.
House refuses to let the team stop thinking about the arm
A newly paralysed arm seems to prove A.L.S.; House insists arm and legs need not be linked and orders a stroke check.
House asks the real question: who is the Jane Doe?
Foreman scoffs at homeless patients, House needles him, then samples a stain from her belongings to diagnose.