What is the title of House M.D.’s 2005 episode that features three diagnostic cases?

The 2005 House M.D. episode featuring three diagnostic cases is titled “Three Stories.”

“Three Stories” is the twenty-first episode of the first season. It uses a distinctive structure in which Gregory House teaches medical students while presenting three apparently separate patient cases. The stories gradually reveal connections to House’s own medical history, including the leg injury that led to his chronic pain and cane.

The episode was written by David Shore and directed by Paris Barclay. Its unusual narrative design helped distinguish House M.D. from a standard case-of-the-week format. Rather than simply following one patient from symptoms to diagnosis, the episode makes diagnosis itself the subject of the lesson.

The title can be confused with the number of patients or with a generic phrase describing the plot. The canonical title is “Three Stories,” and it is widely regarded as one of the series’ landmark episodes. It won a Primetime Emmy Award for Outstanding Writing for a Drama Series.