Hi, to start off, I'm not saying it's not MG, and I'm not saying it is this other idea, I have no clue. But what you are describing sounds a whole lot like a friend of mine who has MS. The pattern it sounds like you are describing, of relapsing and remitting, would fit with that diagnosis as well. I hope your doctors have at least done an MRI of the brain and C-spine before throwing out the psychogenic nonsense.