It is hard to measure someone's dysphoria,but I can say mine for sure hit me like a train. I held up for years hidding myself in a person who wans't me, and when I couldn't take it anymore, I developed panic disorder AND depression major at the same time in the course of a month.
So for me, when I say I became myself it is totally literal. I'm sure I was going to die pretty quick if I continued to follow that path, because in the attempt to block my feminine self I almost destroyed myself.