Mark,

Some people are more anxious to begin with so having a head injury and residual problems for a long time, in some cases years, afterwards is obviously something that can raise the anxiety levels.

It's in my opinion no different from having cognitive issues post concussion. But that's just my view.

I really dislike the term "mental illness" as if it's a separate entity and not organic.

Genetics plays a huge part in how we manage life with or without anxiety or panic or depression or whatever it is. Unfortunately I can't go and get some sort of genetic modification.

The worse my vertigo the more anxious I am of falling again.

The better my vertigo the less anxious I am of falling again.

It's not unreasonable for people who have suffered after a fall to fear another fall. It's how we humans work.