@banksnc49 Hi Nancy - wow, thank you for sharing. I wasn't diagnosed with SFN until after my first two COVID vaccines and don't think they made anything worse but I was also working with my primary doctor at the time on what medication would help the symptoms I did have (that I now know were SFN symptoms). So, I really couldn't differentiate what was SFN symptoms, side effects from trying meds, COVID vaccine, etc. Just didn't have that full awareness at the time. I have a message in with my neurologist now to see what his recommendation is on the booster.