I know this symptoms well. Often I have this tingling not only in my arms or neck, but all over my face and in my tounge too,... in combination with other symptoms like impaired vision,... In my case this is a part of symptoms of the central nervous system like by migraine. I get it, when my POTS symptoms are going to be more worse, maybe when I am dehydrated... When they stay continously so I know I have to go to my doctor and get an infusion. Afterwards all symptoms are over. So I know it comes from POTS.
So in the beginning I lay down, take longer rest, drink much, take more salt, etc.... But all of this can only help for time. So I learned to accept it as a sign of my body which helpes my to recognize my limits better.