Welcome to Neuro talk. I know the last thing you probably want to do is see another doctor. I do recommend you see a good neurologist. Your PCP will give you a referral. There are so many different Neurological problems it is hard to pin point what this could be. Renards, can account for the cold hands etc. The lack of feeling in hands and numbness can be PN or carpel tunnel. See what I mean?
Just too many symptoms. Since your visions is being changed, I would think that for this alone, it would be worth a trip to the neurologist. I sure wish you all the best. Let me know what happens. You found a great site for support here. Keep in touch. ginnie