@philipnewbury my symptoms started with swelling in hands and feet following which I underwent various blood tests which showed high Eosinophiles levels. I went back to historic data, as I regularly have blood tests to monitor the hypothyroidism, and noticed that for the first time eosinophiles were high after a covid vaccine, booster and subsequent Covid I caught in 2022. The doctors didn’t find anything worrying even after a second peak in the Eosinophilic count two years later. Then in 2025 the levels went up again and more tests were done because of the swelling. So maybe it is Covid that triggers something, plus the other autoimmune disease I have … My treatment is Prednisone and methotrexate but except for dealing with the swelling to some extent not much improvement in mobility and rigidity.