It definitely is I get it in my thighs and upper and lower arm muscles just seen a spcialist who told me this is very common. When it happens to me its like my muscles are in spasm and burning and I cannot relax them at all and muscles are solid to touch I get the pulsating feeling as the spasms begin to relax.

i have the exact same as this also, so guess its a fibro symptom xx

Oh yes. How is your bp? I learned early on to check my vitals as my pain fluctuated but never left. It's amazing the things you notice that had never been an issue before. Herbally Infused oils rubbed into the muscle do a lot of good. Feel better soon😃

Me too - I have been told the term is "jumpy" muscles

Yes I have this too! My doctor told me it is a from not getting enought REM sleep in fibro. I was on a muscle relaxer called flexirol for two months and it stopped the spasms and helped me sleep! But i had to stop taking it because of nausea.