When I started doing this work four years ago, I had a ton of different symptoms that had been building up, but one of the ones I'd had for many years was a similar dizziness/fogginess, and it is the single symptom that is constantly hovering, waiting to come back the minute I get stressed or, as I recently realized, when I am not being mindful (usually due to outside stressors).
I had been checked by my doctor many times over the years, and this symptom would come and go, but in the summer of 2011 it was so bad that I went to a dizziness and balance clinic (of physical therapists) to be thoroughly checked out. The diagnosis was a typical TMS one (though I didn't know it at the time: "irritated vestibular system" which is pretty meaningless. The owner said that his theory about "people like me" (with symptoms that didn't have a known cause) was that I was a migraineur (SP?). I didn't think I had migraine headaches, but I was researching aspects of migraine when I came across a recommendation for The Divided Mind which I immediately read, and that was when my life turned around.
I still get the dizziness (although my other symptoms disappeared and rarely if ever bother me anymore) but, as I like to say, my relationship with it is very different, and I no longer fear it.
However! This has been a super-stressful year, and the dizziness has been really bad during two significant periods. I only recently realized that that I've gotten so used to it over many years, that it's actually way too easy for me to banish the automatic fear response - when I do that, I'm also subconsciously assuming that it will pass - sometime in the future. This allows the symptom to continue, rather than tackling it head-on using tried-and-true TMS techniques, like journaling and, more recently, mindfulness practices.
It's still a work in progress, but I think I'm making headway.
Going to that clinic did ease my mind that there was nothing significantly wrong with me, which we always recommend when you haven't yet been checked out for a new and scary symptom. Finding Dr. Sarno as a result was just pure luck!