I am very intrigued by this concept. I had never even heard of this before....but ever since Fiona posted this thread, it makes me wonder about a few things and whether this may have something to do with this 'pressure'...

Do any of you feel a 'tightening/pressure' feeling when you first ramp up the unit? When I turn mine completely off for awhile - of course the burning neuropathy immediately shows it's ugly existance.........so I turn the unit on....sllooowly and when I FIRST start feeling the stim kicking in, it's like there is a pressure issue, and then after having it on for awhile, THAT's when the back pain issues kick in.
Like I've said before, back issues never were an issue in my case...
But this 'pressure/grabbing' sensations ends up taking a toll on my back.
I WONDER if this has something to do with this 'spinal fluid pressue' thing Fiona has brought up.

I will certainly ask about this at my next appointment.
Jackie, does this sound like what you may be dealing with as well??
Maybe several of us can ask about this issue at our Dr's appt's and compare notes.....