I'm being treated for PMR. Like you, I did not experience pain and stiffness in the neck and shoulders, but my CRP was 67. "Growing pains" is actually a term that I used to describe what I was feeling in the creases between my hips and thighs where it hurt down deep. The pain would shoot down my inner thighs to the back of my knees. Eventually I started waking up so stiff that I felt like I had cement columns for legs. It took me hours to loosen up. (That part came on somewhat suddenly after weeks of fatigue.) I had profuse body aches and just felt sick. I tested for COVID. Negative.
May I also add that while I'm 73, I'm still pretty limber but jeff97's symptoms in the hips/legs mirror mine.
"As far as my hips and legs, it was hard to bend and pick up something off of the floor, put on socks and shoes, get up from a chair, etc." Getting down & up from the toilet, as well as in & out of the car was awkward too. It was thought that because I responded so well to the Medrol dose pack, it was most likely PMR vs anything else it may have been in my case.