Many people describe fibromyalgia pain as tension in their muscles. It feels like your muscles are tired after working out. The only problem is you were not working out.
Other people describe a tingling in their muscles. Some people who have arthritis and fibromyalgia describe it as feeling like arthritis in muscles instead of joints.
Relief can be had with some of the same techniques you might use for any other pain. I have used topical creams and over the counter pain medications.
I have used hot baths with Epsom salt in it with some relief. This is a trick athletes use for muscle fatigue. It helps draw out lactic acid that has built up. One friend sits in a bath chair under the shower as hot as she can stand it.
After a car accident that aggravated the fibromyalgia, physical therapy helped for awhile. Massage and heat seemed to be the most effective.
I learned to recreate those things at home. I had a vibrating pillow. I also had a board that vibrated and heated that was very helpful.
I had found the board years ago at a garage sale. I got the pillow one year at Christmas. I am s cheap it hurts. Being careful with money is becoming more and more important the sicker I get.
Of course these things only took the edge off the muscle pain. In the beginning I knew nothing. I was glad for any relief I could get.