I have used acupuncture to migraines and had a very experienced practitioner, my migraines subsided for several years.
I had another who help with some never pain. I was learning to meditate, so I tired meditating while receiving a treatment and I felt as if I was literally nailed to the table.
I told the practitioner and found that acupuncture is grounding. So, that explains the nailed feeling.
I think there are all types of practitioners
I have needles applied that hurt and bruise and needles applied that did not. I am learning to trust my gut on how I feel about practitioner, the same with any professional.