I could have written your post! I’ve experienced all the wacky symptoms you note and more. Were I to keep looking for an answer, that task would have hyjacked my entire life. I’m 83 now, still having the bizarre sensations, cramping limbs, burning neuropathy — all over as you note. There are reasons for such sensations, and at some point you have to know that the doctors don’t know any more than you do about “why” it’s as it is, and know that this is what you have got to live with. When you accept that, you will feel better. Bring the crazy activity you experience along with you where ever and you will find yourself implementing some compromises and clever ideas to get through each day!