Yes, I was diagnosed seven months ago.
The treatment is steroids, usually a high initial dose of prednisolone. This should remove the pain within a few days. If not, (as was with me) you will need a higher initial dose.
You will also need supplementary drugs to avoid bone breakages/osteoporosis etc., plus other bits and bobs too.
The diagnosis is often made by a GP followed by blood tests which show high inflammation levels.
You taper off the steroids gradually. Doctors tell you 18 months to two years but the consensus is of five to seven years for this illness to run its course.
It is quite a burden due to all that the steroids do to your body. I won't depress you here!
There's brilliant information on the 'Healthunlocked' website. Search there for 'PMR.org'.