Is a sphenopalatine ganglion nerve block effective treatment for fibromyalgia?

See below: This is an interesting question. Over the years there have been anecdotal reports of relief of widespread pain conditions with sphenopalatine ganglion block and some doctors who did this procedure for many pain syndromes. I have used this block for facial pain and headaches. Have not used it for fibromyalgia. No good studies on this to my knowledge.

No Evidence: Sphenopalatine block is indicated in the treatment of acute or chronic head or facial pain. Fibromyalgya is a generalized pain syndrome, with associated affective disorder. This does not deny the possibility of the placebo effect, present in all forms of therapy.

Huh?: Sphenopalatine ganglion block is used for trigeminal neuralgia or facial pain NOT for fibromyalgia.