I can only speak from my experience. I had my first round of LC in July of 2020. Developed POTS, anxiety, lack of appetite, low grade temps, fatigue, brain fog, etc.. for over 30 days after the initial illness. My doctor finally gave me a round of steroids and I bounced out of it. Fast forward to May 2021. I began developing many of these same symptoms except way worse! I developed mesenteric panniculitis, elevated liver functions, severe abdominal pain (they thought I had pancreatitis) plus the POTS, etc. I kept saying this is a lot like my long covid. All my covid tests were negative early on. Finally my doctor did an antibody test that showed I had a recent infection. I didn't even know I had it, but developed LC symptoms on a much greater scale. I was like this for over 6 months, then slowly began feeling better. I finally went to see a specialist who was treating LC, that said the virus made me develop an autoimmune response. Even now when I am exposed to any virus, I develop LC symptoms. I have learned to manage with steroids, rest, and fluids. It will now be lifelong. Go see a good neurologist who believes that Covid and the vaccines are the reason. I truly think it was my booster (Moderna) that made the second round much worse. I had it in January before I got sick in May. My previous vaccines were Pfizer. I am also a PhD scientist, and believe in science, but if I had to do it all over again, I would not have taken that vaccine. For what it's worth...