janieg,

What you are describing as a buzzing feeling all over especially at night, is exactly the symptoms I have had for 3 years or so. To make it short, I have had all sorts of work up. Diagnosed with SFN and autonomic neuropathy.

These feelings of buzzing or vibrating has been very annoying to me, especially during the time I did not have a diagnosis.

I had my neuropathy neurologist explain it to me, and it took a couple of times having him explain it before I understood and accepted it. In my mind, I was convinced that I had a systemic infection or something, or MS. (I feel these symptoms more when I am exhausted)

That being said, I think if your SFN is being diagnosed as being caused by immune problems, there is a chance it can be treated immuno suppressive meds.

The neurologist said that this symptom is caused by the sensory nerves being affected by small fiber neuropathy. To say it simple, he said" it is the sensory nerves sending the wrong signals (due to SFN) and it is just your presception of it being like a buzzing/vibration. Just ignore it, when it buzz, just say to yourself "wrong number."

Not that the doctor is not treating it, he is by symptom control for now. Lyrica and Amitripthyline which is pretty much the standard of medical symptom control.

I am due for some further diagnostic testing and will hopefully soon understand the underlying problem causing the SFN.

I have other symptoms from SFN such as burning all over, pins and needles and numbness in extremities. Sometimes extreme sensitivity in left arm when I feel like nothing can touch it.
From what I can understand, these symptoms are what is called Allodyna.

These were just some of my thoughts from my understanding of these horrible symptoms.