Lara, I talked to you about this a little bit already, but will share my experience and opinions here too, for the greater good of womankind (and mankind!).
I developed the first symptoms of fibromyalgia when I was 22... back in 1983. It started with sharp pain in my lower back, and I had pain in my right arm every time I pushed the slicer in the deli where I was working. I was not in any accidents or trauma, nor did I have any illnesses, and I wasn't even depressed or stresses about anything! The only thing I can think of is that ever since I was a child I had allergies to grasses, pollens, hay, mold, and cat dander. I was healthy as a horse before coming down with the pain. My life was the happiest it had ever been, as I was in love and living happily with him.
The pain in my arm went away in short time, but the back pain continued, and traveled up to include my shoulders, neck, and upper back as well. I'm sorry I can't give you all a better explanation.
As for memory problems, they go hand in hand with fibro... thus the "fibro-fog" we all talk about.
I too believe that a fibro's nerves are way too sensitive, which make everyday actions, like walking, doing laundry, washing dishes, etc. much more painful to deal with, than if we were "normal." I don't believe there HAS to be a CAUSE in the body that develops into fibro. There just might not be a cause for this... some people are just born with these extrasensitive nerves. Period. I need to stop driving myself crazy, trying to find answers to this. Now, if you find the CURE, I'll be in line!
Love you Lara... and hugs to all you crazy fibro's!!!