I’ll separate fibro and private in my answer, for easy reference…
Well to sort out differences first: What helps me is expert acupressure, not acupuncture.
Acupuncture is proven in studies as helpful for quite a few fibromites who try it and there are acupuncture docs that specialize in fibro as well as the recommendation to go to really Chinese-trained acupuncturists. Unfortunately I’m the only person I know who it really harmed. I tried it 9x with a doc who was not well-trained and not concentrated at the beginning of my full flare and I still think it might have even helped bring it on. And then once this year with a doc who I was unsuccessfully trying ozone injections at, and was sort of speciailized in fibro-acupuncture-points. Same effect, it hurt me during and after, only this time I used the know-how my acupressurist had told me that cold showering neutralizes TCM, which it did without ado. There are quite a few variations on acupuncture, like ear acupuncture, dry needling, laser acupuncture or neural therapy (small local Lidocaine or Procaine injections) - the latter didn’t help me either, the first wasn’t sensible to do, seeing as I was successfully getting ear acupressure already.
To still answer your question re. that I’d say, yes: less muscular, nerve etc. pain, but also less generalized Ache etc., it works (for some) on the whole body and all accompanying conditions, like insomnia etc.
Now (“real”) acupressure can do all this too. It was derived in Japan 100 years ago from acupuncture and uses the same TCM way of thinking in points and meridians, but it means no needles, just pressure on certain points using parts of the body of the therapist, or instruments such as an acuball, an energy, a foot or a spine roller, or a pyramid/power mat, or a ‘needle’ (pen, stylus) that doesn’t pierce the skin. This has been developed further as ear reflexology, cf. Ear Acupressure — Traditional Chinese Acupuncture Clinic, LLC. My acupressurist works first on my ears using a metal ‘pen’, then on my body using mainly her hands, but the pen for certain quick or deep-going reactions, also other instruments like a metal vibrating wheel gadget or a pneumatic one.
One con for both is that all studies up to now were biased, i.e. it is not evidence-based, which also has the consequence that not all insurances pay for it, altho it does have some standing. Both are assessed after about 5x. Acupuncture means you have the needles in you for about 20’, which don’t hurt, and can usually move a bit (I can’t tho). I don’t know how long acupressure takes for others, but my fibro is a difficult case and we’ve been on it since Oct20, about 2x1.5h per week. It does hurt, but my acupressurist, who has fibro herself, started carefully, the cryotherapy before helps prepare my body. Occasionally a treatment causes a small flare, but usually it is very helpful at least for that day, and it has been a miracle cure for some parts of my fibro, like leg energy, air hungriness and esp. cold tolerance. If I have a certain acute pain when I’m there, she can usually press certain points, often somewhere completely different, antagonistic, which makes that pain completely go away completely and stay away too - that takes 1 to 5 minutes. Chronic pains are the ones we have to work on a lot longer, usually weeks. I say we, because she doesn’t work on my body, she works with it, and I can often take an inner active part. Now we’ve got thru the easy stuff we’re working on my loins. This is improving my ability to raise my legs (e.g. put on my shoes standing), but we’re trying to improve other various lower back problems (esp. tail bone pain, unrest at night, which doesn’t seem to be RLS) and also posture and torso (chest, upper back and neck, as direct pains like have partly been solved but stiffness and pain keeps reappearing) as well as praps even gut problems. She started by ‘ironing out’ scar tissue on belly with the vibrating gadget, which already made a difference, has also used it on the rest of my belly and legs, but my skin often can’t tolerate it, so she uses her hands, sort of trigger pointing. Like on the ear that means holding a pain spot till it doesn’t hurt any more. I wdnt say that’s a con, cos she usually knows how far she can go (I have to feedback tho). The main con is that it’s not for people who want to make do with chucking in a quick pill or 10. It’s in my case a medium- to praps long-term treatment which takes time to do and time to work. The reward however is no medium- or long-term side effects like pills have, and it doesn’t suppress symptoms, it cures the causes in my body for good. And that’s what I need and am prepared to do a lot for.
BTW: This goes to show that pressing a few acupressure points with your fingers or a pen is not the same. To get treated herself she goes to a therapist or gets it done in further regular courses and also trains her husband a bit.