Since Autonomic is Small Fiber......
 

Is it a "give in" that one with sfn will develop autonomic problems?

No, I don't think so, but we'll have to see what the experts here say.

It's not a given--
 

--but it is true that many people with small-fiber syndromes whose primary symptom is pain do show some autonomic disruption from time to time; often it's subclinical and fairly subtle, and shows in irregularities of blood pressure or sweat response. Of course, people whose neuropathy results from diabetes/impaired glucose tolerance are well known to expreience autonomic disruption.

See:

http://neuromuscular.wustl.edu/nothe....htm#autonomic

http://neuromuscular.wustl.edu/senso...tml#idiopathic

http://neuromuscular.wustl.edu/auton...andysautonomia

It depends. If you biopsied a lot of the people with 'Fibromyalgia' you would find a small fiber neuropathy. Dysautonomia is a SFN.

My autonomic symptoms came on simultaneously to the sensory. I have some kind of autoimmune junk...possibly Sjogren's or Lupus. There seem to be a lot of opinions as to what my labs and symptoms mean, but for sure SFN is a given.

I don't think every case becomes autonomic, but I don't think they know the incidence.