Hi, I’m sue, and new mayo this group. I was diagnosed with SFN in 2018. I am 62 years. My condition is idiopathic so they say . I am going to see another neurologist as all I have had done was a 2 nerve conduction test and I believe there is more that can be done to really confirm this diagnosis. I have managed My SFN myself without medication , which I did not want to take , yet I live with constant discomfort . My concern is this year I had two AstraZeneca vaccines without incident , but I had my booster shot , the phyzer vaccine Four weeks ago and three days later my symptoms became unbearable , the pain , tingling and even my balance are quite bad and my concern is that this may be permanent . Of course I can’t blame the phyzer vaccine , but I think it may be a possibility . Has anyone experienced this too. I would appreciate anyones imput please, Thanks