Wow when I read your post I could feel your frustration and with a lot of empathy. I have been suffering with some of the same symptoms and have had just about as many test as you and have had a neuo diag me with benign fasciculation syndrome. It is very difficult to live with. I also have developed anxiety over the whole thing. I also have floaters in my eyes and blurry spots to boot. Arms go numb, cant sleep well and could go on. I just wanted you to know you are not alone and I hope with as much hope a human can have we find a solution.