Just a brief addition to Valerie's post: I think it is pretty conclusive that FM'ers have elevated rates of Substance P and reduced levels of serotonin (with or without depression), though NOT conclusive as to whether these are causal or effect.
And, lovely side effect of this bummer thing is memory loss -- specifically MINE -- I can't remember anything else in your post, so that's it, bye-bye
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Copper
Let Miracles Replace all Grievances