I am having some pain in my 4th toe. It is not constant. It happens occasionally when my foot lands there is a sudden shock like feeling that hits just that toe. It's feels similar to when you hit your funny bone. It on bothers me when I run barefoot and on rare occasions when I am barefoot on a really hard surface. It doesn't bother me at all when I have my casual Vivo's or Lem shoes on. Can anyone tell me what's going on? I am think of switching to some kind of minimalist running shoe, though would really prefer not to. thank you.