For nearly a year, I'd get this shocking pain around my inner right ankle. My natural reaction
was to look at it, and every time theres a vein (typically unseen) that will bulge out and appears to be about as big around as a pencil. The pain doesn't last too long, sometimes 5 minutes sometimes longer. It happens while walking, sitting, standing, lying down, etc. so it's not related to position I am sure. Usually within 5-10 minutes of the pain leaving, the vein goes down.