I always had cold feet and cold hand, but my body was warm. When i close my eyes it tingling my back and my brain. When i smoke it makes me always headache,and dizzy. And automatically my body my feet and my shoulder tingling automatically. And I forget easily and my vision blur sometimes and my feet and my arm get numbness but not all the time. Sorry my English was broken 
but i tried my best to say what my conditions 
Hi.
Your English is perfectly fine.
I am now living with exactly the same symptoms as you are. I have recently received a diagnosis of PoTS and now have a lot of other autonomic system issues since my last relapse.