Draco noticed Snape's hands shaking. He wanted to ask, and he hated that he wanted to ask, but when he went to answer him about the changed bandages the words ended up coming out on their own, unbidden.
"Does this happen often?" It hadn't, last year. Or he didn't think that it had - except that when he thought of last year that sense of doubling came back so suddenly that it left him dizzy.