My neuro was the one who helped me put a name to the symptom. He asked me if I had ever sat or stood on an air conditioning unit (yes) and does what I'm feeling feel the same as that (yes). He said it's a sensory symptom known as vibration and/or buzzing.

Thav, since you don't have a diagnosis I have no way of knowing if your vibration is MS related but your PCP is wrong - vibrations/buzzing can be a symptom of MS.