[It's frightening only insomuch as it's worrying. That kind of nasty cough paired with someone who looks near death is not a good combination. Clayton's already taking a breath to fuss more at him when--oh, right, the vampire thing.]

[You know, if he wasn't here and he hadn't heard from Steph that vampires are a Thing in some places, then he might take on more of House's mindset while casually playing along. As it stands, Clayton has much more sympathy for him. He flashes a sad smile while House checks his pulse.]

Sorry, man. Whoever's bringin' us in don't like havin' folks with enhancements; I'll bet they took away yer vampirism like they took away folks' magic 'r powers.

[He shrugs, turns to House as he steps away.]

I'll take yer professional diagnosis, doctor. [Then back to Beckett: ] I'd say if yer livin', you'll appreciate some cough medicine. But I suppose if you don't think you got a problem...I can save it fer someone who does?