I actually have this too! For me, it usually happens when my extremities get too cold, and it can take me a bit to even notice it’s happening. It usually happens predominantly in my big toes for some reason. For me it just feels like like it’s gone completely numb, and I lose all feeling in the digit. I usually break out the heating pad and try to warm it back up until I can feel it again.
Seriously though. Snapper has saved my bacon so many times, I don’t even know how I operated before it.