So, over the years one of my weirder symtoms has been a lot of pain in my left arm, particularly the front of the shoulder & shooting down the upper arm. A few years ago, I had what looked like a spider bite there (this after years of the pain), and it kept coming back, waxing & waning with my other symptoms, for about a year. Nowadays, sometimes when I'm just sitting around (which is a lot! ) I'll notice my arm is doing something funky. I'll find that I'm holding it kind of turned in toward my body, sometimes with the thumb clenched inside my hand. I seem to vaguely remember that the thumb-in-hand thing is some kind of neurological "sign". Does that ring a bell with anyone? (FYI Have not seen a neurologist.) Thanks for any input.