I started having anxiety attacks 7 years ago. I remember that my first "symptom" was a problem with my vision. I was convinced that I was going blind. Reassurances from my doctor and optometrist did nothing to stem my fears and I ended up at the eye specialist. It was only after being examined by the eye specialist that I accepted that there was nothing wrong with my vision. Of course that was only the beginning and I ended up the same way most HA sufferers seem to end up - a new illness and set of symptoms to replace the old one. It was also at this time that I started experiencing the dizziness and the feelings of being off balance.
I'm new here and since arriving I've started to see that HA sufferers suffer many identical symptoms. I find it reassuring to say the least.
You problem certainly sounds like anxiety. I hope that it makes you feel better to know that your symptoms are shared by many of us here.