Castiel leans forward to press his elbows against the table's surface.
"Demon stuck in the meatsuit. Meatsuit is degrading, probably due to the fact that, oh, I don't know, there's a demon walking around in it. Just a thought. Not that House's team doesn't know about that.
"Thing is, the chick's got a few hundred of chemicals swirling all together-like in her system - she was pretty fucked up before the demon got her claws into her. Satantic rituals, fun stuff like that. So, we're going with the idea that little-darling-Luce-lover got hopped up on something none-too earthly which is causing her body to decay and thus one pissed off, trapped demon."