PA: Due to some graphic content, viewer discretion is advised.

A WOUNDED POLICE OFFICER WITH UNCONTROLLABLE LAUGHTER HAS HOUSE AND THE TEAM BAFFLED; WHEN FOREMAN STARTS SHOWING THE SAME SYMPTOMS AND THE OFFICER'S ILLNESS TAKES A FATAL TURN, THEY MUST RACE TO FIGURE OUT THE CAUSE BEFORE IT'S TOO LATE TO SAVE FOREMAN'S LIFE ON "HOUSE" TUESDAY, MAY 2, ON FOX

Part One of a Two-Part Episode; Part Two Airs Wednesday, May 3, at 8:00 PM

A police officer is admitted in critical condition with a gunshot wound to the head and symptoms that include unexplained giddiness. With no explanation for the odd symptoms, House dispatches Dr. Foreman to the officer's apartment to see if he can gather any clues or possible causes. As the officer's case worsens, Foreman begins to exhibit the same early symptoms and is put in isolation with the patient until House and the team can make a diagnosis. The police officer's condition continues to deteriorate and Forman is forced to watch up-close as the officer descends into unbearable and unmanageable pain. The team races to find the cause of the illness before Foreman's condition takes the same deadly path in the "Euphoria; Part 1" episode of HOUSE airing Tuesday, May 2 (9:00-10:00 PM ET/PT). (HOU-220) (TV-PG L)

Cast: Hugh Laurie as Dr. Gregory House; Lisa Edelstein as Dr. Lisa Cuddy; Omar Epps as Dr. Eric Foreman; Robert Sean Leonard as Dr. James Wilson; Jennifer Morrison as Dr. Allison Cameron; Jesse Spencer as Dr. Robert Chase.

Guest Cast: Scott Michael Campbell as Joe; Loreni Delgado as Haines; Chioke Dmachi as Baby Shoes; Chil Kong as Morgue Tech.