Not much longer after receiving the covid vaccine, I developed SFN; all of my skin burned. I took pregabalin, which helped with the pain, but gave me drowsiness and fatigue issues. A few weeks ago I contracted covid (not fun), which cured my SFN. Not completely, but enough that I no longer need meds.
SFN was difficult to deal with. I have a demanding career so not being able to sleep was a problem. The cumulative pain was starting to weigh me down. I had SFN for 8 months.