Quote from Turk in My Full Moon
Turk: So the staff shrink says that Mr. Swick has Capgras syndrome. It's a brain disorder. Basically it means that he thinks everyone in his life has been replaced by an identical impostor. Howie: That's wicked cool. Turk: I know, dude! If we sent the twins from radiology in there, his brain would explode. But still, I think it's more important that we try and figure out what he ingested. You know, so he doesn't die. Howie: Yeah, fine.