--can certainly be a symptom of nerve dysfunction; it's often associated with pressure on a nerve at a particular junction. (There are myelinated nerves that subsume the skin sensation of vibration, and these are the ones likely involved.)

I get this intermittently--often the senssation starts suddenly, sticks around for hours/days/weeks, and disappears just as suddenly. It is often associated with a particular position (such as when I cross my legs).