You Don't Want to Know
| "You Don't Want to Know" | |
|---|---|
| House episode | |
| Episode no. | Season 4 Episode 8 |
| Directed by | Lesli Linka Glatter |
| Written by | Sara Hess |
| Original air date | November 20, 2007 |
| Guest appearances | |
"You Don't Want to Know" is the eighth episode of the fourth season of the American TV drama House and the seventy-eighth episode overall. It aired on 20 November 2007. Notably, in this episode the differential diagnosis is confirmed as lupus despite the fact that 'It's not lupus - it's never lupus' is a phrase often used to the point of catchphrase by the eponymous Dr. Gregory House.