I asked my autonic doc about this and confirmed it in a neuro. ( that is pots familiar) that it may be in my case small fiber neuropathy..and that it falls into place with POTS. First I was worried but was reassured it is common in pOTS patients and it is something to do with nerve impulses. I AM NO DOC.. But be assured that I get it too, I sometimes feel like my limbs are all asleep when lying or sitting to long or crossing legs. And sometimes my hands,feet,and nose are cold. Stinky and annoying but part of the package I guess.. Belinda