Can ragweed make you itchy all over?

could be, I know some people that get rashes from breathing molds, there's no reason that ragweed couldn't be doing this to him

I'm sure it's possible. Is he usually allergic to ragweed? Does he have any spots on his body? I think if he had some kind of itch from an allergic reaction then you would probably see small pinprik marks or a rash on his body. Maybe he should make an appointment with the doctor just to be safe.

People have many allergies & i think ragweed causes alot of them. It very well could be that he's allergic to it or something.Hope he gets better.