I feel it’s too easily handed out as a diagnosis possibly used when blood tests come back clear and time and money pressed GPs and other doctors have run out of possible other ideas , ie depression, anxiety, rheumatoid arthritis (some doesn’t show up on blood tests), Ehlers Danlos, Hypermobility, somatic Illness, reaction to trauma, thyroid or vitamin deficiency. It’s like IBS. Too easily dished out when there could be something else that’s causing it and which could be more appropriately treated.
I was recommended a fibromyalgia support group run by the rheumatology dept at my local hospital but lasted one visit before the defeatist, spoony, my whole life is defined by this attitude made me feel irritable. I didn’t go back.