[Issues with a medical person brings him to House again, it has to be. None of the other doctors, except perhaps Stein, come close to causing the amount of trouble that House does.]

Do you think you're catching a cold, or do you think it might be the onset of MN poisoning?

[Because one of those is much easier to treat than the other.]

If you're getting sick, I don't think you should be travelling on your own.