I too developed PMR 7 to 10 days after 2nd Moderna booster shot, July 2022 at age 57. I am down to 5mg prednisone now 9/23. It took almost a month for the proper diagnoses. First sent to orthopedics. I read a similar store where someone else was also sent to orthopedics. I never even heard of PMR and everyone I talk too says to me, "PMR-what is that? I did get to 3 mg back in July but symptoms reappeared so now I back to 5mg and trying not to go up anymore. I never had issues with hips. calves, arms, neck, shoulder, hands. Started at 30mg. Hopeful. I really wished I never got the second booster. No one is admitting that the covid vaccines are causing issues! I have heard similar stories from others maybe not with PMR but other things. These forums are a godsend. Thanks to everyone. This has been hell dealing with. Ther is another mayo clinic link, "Can PMR be induced by vaccine."