Keo...I have had ALL your symptoms, and all the same tests you had....even one for heavy metal poisoning that cost about a bazillion dollars because I was convinced they had missed something. I think you are frustrated and scared and the anxiety you are feeling is adding to the misery, which is understandable. If you have had muscle weakness and twitching on an off for YEARS, I'm pretty sure you can rule out some rare "muscle disease.' Those conditions are progressive and do not go into remissions for extended periods of time. {Rheumy told me this, as I was convinced I had one of those too!) And...I have the sore, raw tongue thing all the time. And the throat thing. I have thought I was choking in restaurants...it has taken me several minutes to swallow a lousy Advil. At one point I had two glasses of water next to my dinner plate so I could 'wash it all down."
Fell better and know that I am thinking of you. There's alot more to fibro than pain and fatigue and when some of these other symptoms rear their ugly heads, it's difficult to believe another manisfastation that we have never experience before can bring us to our knees!
Donna