It is hard to describe the anxiety. I actually don't get full on panic attacks, although I did in the beginning. For me it is more Depression and then the anxiety manifests itself with hyperventilating without even knowing it and a pounding heart. I will wake up just out of the blue and be hyperventilating. When I went to get my blood tests done, it showed that I was in a stress state and hyperventilating and I thought I was feeling pretty good that morning, so I think I am anxious without even knowing it most of the time. I obsess a lot about my symptoms as well. Then the waves of despair, depression, mixed with anxiety. If you get your Iron levels tested make sure they check your ferretin levels. I think that is what it is called, or basically your tissue storage iron I believe, not just your blood serum iron.