I have had it. But never thought it was PMR related. I guess it could be. It’s very painful and can restrict your movement especially getting in and out of a car or climbing a ladder. I was able to get rid of it with deep tissue massage by using a hard rubber ball against the wall and rotating the painful area by rolling the ball over it with pressure against the wall. It’s amazing how you can’t find the spot that has a virtual knot in it and work it over probably two weeks or so to get rid of it. Good luck.