My main symptom is anxiety (I have others but they are slight.) In my case I think I also have a predisposition to anxiety, depression and fear.

But check out the thread "Great Recovery Blog." Its author is also mrico2 at this forum. He had major anxiety issues post-concussion but it eventually turned out to be--I forget--either vestibular or ocular, i.p. he felt like he was falling all the time.