Can people with Small Fiber Neuropathy work? What kind of work can they perform?

Disclamer, I hold a disgnosis, not a medical degree.

It truly depends on the person, the degree of symptoms, treatments and what may be the cause.
In my opinion, short answer - No. A standard wake up early and get to word job isn't feasible. Many have issues sleeping, and the pain is there prior to stepping out of bed. a nonstandard type of job might work - no set hours, no commute, and only happens in the fake world of craigslist spam ad's existed then yes.

People’s ability to work with Small Fiber Neuropathy is based on the cause and severity of their neuropathy. In some cases it is an annoyance where people can continue their original line of work. In other cases where dexterity as with a surgeon or painter is needed, hand numbness would interfere and where stamina is needed such as a cashier, orthostatic intolerance would interfere. As seated desk job or remote home job with flexible hours may work best for some. Others who have acute onset debilitating progressive small fiber neuropathy as is seen with TS-HDS or FGFR3 antibodies may not be able to work at all.

I was disabled from Jury Duty and 99.99% of work outside the home in 1990 because of anxiety disorders that are a logical result of so much pressure on your body for decades.

Everyone is different. Apparently of the 1 / 1,000,000 people with SFPN, very few have Severe Rhinitis flu symptoms. These made it necessary to have very flexible jobs and work from home for years on my own ever-changing schedule. HIDING your illnesses is a challenge.

However, in my case, at age 45, the Autonomic Nerve Losses of my Esophagus, Stomach and Intestines made any work impossible. At that point I was hoping to die in my sleep. No such luck. Prior to that I had diminishing abilities from 18 to 45 that depended on quality of weather (dry, not too hot, CLEAR, as well as consistent). I moved from Los Angeles to San Francisco as it was an air-conditioned city but since 2003 and especially 2013 the humidity there is dramatically higher with the warming Pacific. You can confirm this via NOAA and keep in mind that the Trump Admin defunded it for 4 years so that period of knowledge was greatly lost.

I WOULD SAY THAT WORK AT WHAT YOU CAN AND SAVE AND PLAN THAT YOU WILL BE FULLY DISABLED SOON. SFPN was not "discovered" when I was in my early years of illness and and in my 40s it was not discussed by most Neurologists who were not even open signing the extra paperwork to sending me to Harvard, a process that took me over 6 years.

KEEP RECORDS OF ALL YOUR MEDICAL VISITS AND DIAGNOSES (EVEN THE WRONG ONES) IN CHRONOLOGICAL ORDER AS YOU WILL HAVE TO PROVE TO THE FEDERAL USA GOVT YOU ARE DISABLED AT SOME POINT. IN MY CASE, I HAD 200O PAGES OF SUB-ILLNESS INFORMATION BUT NOT THE EXPLANATION (EVEN WITH THE POSITIVE BIOPSY 2 YEARS PRIOR TO MY HEARING) AS TO WHY I HAD SO MANY ILLNESSES. THIS ALLOWED THE FEDERAL GOVERNMENT TO DENY ME THE INCOME AND HEALTH INSURANCE (MEDICARE VS MEDICAID) FOR WHICH I PAID TAXES.

In those days "SFPN" was NOT listed in most hospital computers. NOW it is listed and if you have it you should be able to recognized as fully and progressively disabled. With that designation from the FEDERAL Government you can get off welfare from the States and you can still work when/if you are able with no loss of income or health care. With Medicaid you can NOT go back and say, "here is the 100% proof you overlooked or we didn't have."