As I mentioned in a previous thread on this site, yes, I do blame the Pfyzer vaccine for acquiring PMR. It happened within 5 days of my second shot back in March of 2021. My case was hard to diagnose because it was so mild--I only hurt at night when laying in bed. It lasted a about a year and a half and flared up again when I got COVID in Dec. 2022. I tapered off a low dose of prednisone in a few months and have not had a reoccurence since, despite just having COVID again last week. This last bout was extremely mild--I was just tired to begin with and then it acted like a head cold for a few days. This is despite never having another booster since March 2021! I will never have another mRNA vaccination again and I probably won't get the Shingrix vax. I did get the old shingles vax long ago, so hoping it has given me some immunity. Finger crossed.