[Clayton smiles back, even before House continues on with the story. He knows just from that one little genuine grin that he's figured it out--but more importantly, he knows he's impressed House. A little silly, wanting the resident grumpy doctor's approval, but Clayton is all about making headway with people. He's just glad House is capable. He knew he was.]

Oh...I'd call that an infection, I would. [He leans forward again, sounding almost giddy.] Osteomyelitis? How...that was causin' the strokes, weren't it? Spreadin' in his blood 'r somethin'?