@texastechguy Mmmm, this was my experience. We had 6 doctors state they have seen increased cases of PMR after booster. I had covid booster and flu shot 17 November 2025 and yes, I am a strong vaccine believer. Early December started symptoms and wrote them off to workouts. By early January could not dress/get out of bed without help. As a US resident I had no accessible local doc care. I emailed/zoom contacted both my doctor in Europe and a fasting clinic in California. BOTH said they had seen cases of PMR after booster shots. Then I did go see a doc in Canada (reasonable $$ when paying out of pocket) and she told she had seen several cases of PMR within 2 weeks of booster shots, including her own sister. Then my husband (ALL of this 3rd and 4th hand info) went to see his own GP (USA) and she also said she has seen an increase in PMR cases after booster shots. Mind you, we had ALL vaccines in the 1960s and 1970s both childhood vaccines as well as all required to travel to tropical lands, then a different technology. Covid vaccines in 2020/2021 forward were based on the mRNA, which technology was about 10 years old when they used it to bring the COVID vaccines. Frankly I have no idea and do not understand enough of it. I do know that in January PMR had changed my life so drastically that I did not want to live with this. That said, my Canadian doc March 19 told me to start Prednisone at 30MG and taper 5MG each week. Within a month I was at 10MG, now 1.25MG. Seems that since the Pred duration was shorter both the side effects and the tapering have been pretty easy. PMR is really quite challenging for so many and I am sorry to see anyone go through this. And not knowing when it might be over.