Hi MrsB -
You describe the same thing that I experience - when I mention it, I tend to call it "vague dizziness" so that I don't have to explain that it is not vertigo. I've also seen it referred to as "brain fog" which is a good description, but I also sometimes feel off-balance.
These are all typical symptoms of psycho-physiological dizziness. I started complaining about it to my doctor at least ten years "Before Sarno", and her response was "a lot of my post-menopausal patients complain of dizziness". She didn't think there was anything wrong, so I didn't worry about it. But it became really bad in the summer of 2011 and was one of the main symptoms that I believed was going to end up with me becoming housebound. Thanks to Dr. Sarno, Claire Weekes, and what I learned doing the SEP, I conquered most of my symptoms and got back my life.
But this is the one symptom that comes back immediately when I'm under stress. And I'm quite the stress hog, so I still have it quite a lot. I don't fear it, which means that for better or worse, I tend to tolerate it until it gets really bad, then I get serious, sit down with paper and pen, and start doing some therapeutic writing/journaling. This always helps. Being mindful and staying relaxed (not clenching everything from head to toe 24/7) also helps, a lot, but my problem is that I can only seem to do that for a few days, then I start "slipping" and allow the stress to get in the way again.
The source of the stress is our old friends: perfectionism and goodism. I take on too much, and I spend too much time doing it all perfectly!
The relationship between the stress and TMS is that my primitive brain is trying to keep me distracted with fear, and always alert for danger.
The cure for all of this is more mindfulness! If I can stay on track. Which my primitive fearful brain really, really does not want me to do.
~Jan