I was diagnosed with Polymyalgia two years ago. I was on 20 mg. at the beginning of treatment, but I am currently only taking 2mg of prednisone.
In the past four months, I have
experienced some of what you described. Muscle cramping and spasms in very strange places…like left of my mid-back and lower abdomen. Fortunately, it usually doesn’t last long.
I will ask my excellent Rheumatologist about this strange phenomenon.
Best wishes with your journey.