I imagine this has been brought up previously, so I apologize if I’m repeating a topic. I received an SFN diagnosis earlier this year, but the root cause remains a mystery. The current theory is that it’s autoimmune, though all my tests for that have come back clear so far. I also deal with dysautonomia, but I’m unsure if there’s a connection. For those of you living with SFN, do you know what triggered yours? Was the diagnostic process difficult? I realize everyone’s situation is different, but I’d love to hear about your journeys.
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The doctors aren’t certain, but they suspect a tick-borne illness that persisted long enough to trigger an autoimmune reaction.
In my case, it’s linked to hypermobile Ehlers Danlos syndrome. I also have dysautonomia and rheumatoid arthritis.
Mine stemmed from an overactive immune system reaction to COVID. That’s my explanation, at least, since the timing aligns perfectly and nothing else fits.