Then we'll find a way to deal with that if and when it happens.

[He includes the "if" only to keep it from sounding as dire, even though there really is no if about it. It will get worse, because that's just the way this disease progresses.]

I'll work on acquiring some medicine. I'm not having any trouble at the factory yet. Don't let it upset you.

[The last is a futile plea, he knows.]