[1] House's team gets a patient (Frank Whaley) with breathing problems with no apparent cause.
Foreman suggests it might be a result of a vocal cord spasm, and they give him methacholine which would worsen it and thus provide a diagnosis.
House notices that the patient's blood thickens dangerously when his body temperature drops (cold agglutinin disease), something that cannot be faked.
Cole and Thirteen find the patient's car, which allows them to determine his name, his hometown, and that he carries vaporub.
House confirms Foreman's suspicion that he was in the gambling with Chase on the bets and received 50% of the money.
As they walk away, "We're Going to Be Friends" by The White Stripes plays, suggesting House and Foreman might begin to get along better, perhaps because they are so similar.
To waste Cuddy's time, House tells the people in the cafeteria that the food was spoiled, and they should all go to the clinic.
Foreman realized he did like being back, and he says he doesn't want House to get him a job somewhere else.
House takes this as confirmation that the patient is mirroring him, but Cuddy claims that's something she might have said as she has always considered her breasts to be one of her best features.
At the end of the episode, after House has made the diagnosis, Foreman suggests a playful experiment, and they put the treatment on hold and get Cuddy.
After momentary confusion, the patient eventually tells Cuddy, "you have great yabbos", mimicking House's thoughts.
Giovannini's Mirror Syndrome is a highly fictionalized version of a condition treated by Giovannina Conchiglia in Italy in 2007.
[2] The real-life patient suffered frontal temporal brain[3] damage and took cues based on his environment to develop his character.
[2] The researchers stated that the patient "seems to have lost the capacity to keep his own identity constant, as he adapts himself excessively to variations in the social contexts, violating his own identity connotations in order to favour a role which the environment proposes".