...I think the buzzing sensation is pretty common among pn sufferers. Whether it's a good or bad sign depends I suppose , on where you may be in the degeneration/regeneration phase of it all. I notice more buzzing sensation as I have improved , this being about my sixth month of the malady. At least that's the way it seems for me. To my knowledge and what I have gleaned from others on this board, regeneration starts fairly quickly. I suppose the big mystery is what is going on at the moment? So ,it's another symptom of many that pn presents ,and I suppose if you wanted to know for sure it would be a punch biopsy, but is it worth the trouble ?