Hi Jim,

I just responded with similar information to the "Anxiety or PN" query here, so I'll be brief. SFN is not usually picked up by an MRI, EMG, or nerve conduction studies. Only a skin punch biopsy is definitive. (And there are many people on this site who test negative and still have symptoms.)

However, I urge you to get the test. This may mean switching to a Neuro who is more knowledgeable about SFN. The next step would be testing for autoimmune issues.

I have to say the timing of your symptoms is atypical....the onset of my sensory symptoms are completely synced with dusk.....I would be interested to see what others say about this.

Best,

Sylvie