I get what Jenn is saying, and I used to get frustrated when folks on the board would blame all of my symptoms on anxiety.
I think both answers are correct. GAD can cause bfs symptoms 24/7, and bfs can cause obviously do likewise.
When I was in college, we would be shadowed by our professors in the hospital whenever we would do a new procedure. So, not only are you catheterizing or injecting someone for the very first time in your life, causing them severe discomfort, but you are also having an instructor watch your every move. Talk about anxiety! If we failed clinical, we would flunk out of the program. It was pass/fail, nothing in-between, no grace, just you're outta here, ya loser.
I also used to play folk music in front of huge audiences. For someone with chronic stage-fright, this can be a bit of a problem.
But...in spite of all of that, I never twitched. I never felt weak. I didn't buzz, or tremor, shimmy, or shake. I felt butterflies in my tummy, I'd get palpitations and my palms used to sweat.
Plus, I didn't start getting all the odd neurological symptoms until I caught a bizarro viral infection that totally knocked me on my ass.
In my case, the bfs seemed to come first.
But NOW, if I get anxious or stressed out, I twitch, I tremor, I feel weak, I shake. The anxiety superimposed on the bfs makes all of the bfs symptoms much worse.
So, yes...I believe GAD can cause classic-bfs symptoms, but it doesn't necessarily mean everyone with those symptoms has GAD.
Therefore, I'm always careful when telling people that anxiety is causing their symptoms, because I remember how that felt when I first started visiting here. I'd sooner tell folks that anxiety increases their symptoms, which would be true with either GAD or straight bfs.
Blessings,
Sue