Bad reaction from accupuncture treatment?

First is the person you saw an actual licensed acupuncturist, or a physiotherapist, MD, or someone else who “practices acupuncture”? I ask because this type of response is entirely not common and your reaction by the practitioner is very concerning to me. I’ve been in clinical practice for quite some time and have never had an experience like what you are describing, nor have any of my colleagues. Now some mild flared up issues after a treatment with chronic pain for a day or so is not that uncommon - generally -if- this happens at all it is only the first time or two and after that everything goes fairly up hill. What you are describing, however, is something entirely different.

Generally occipital neuralgia is well treated with acupuncture, I’ve successfully treated many, many cases. And the vast majority of people do not seek out acupuncture until they have exhausted every other option - so they have most likely already had PT, chiro, massage, etc. While it may not seem entirely appropriate advice based on your experience, I would continue acupuncture, perhaps with another practitioner - ideally a fully licensed (if available) acupuncturist who does only that - not a practitioner of other types of medicine. I would also be very cautious of chiropractic, even though you’ve had some short lived responses to it. This is particularly so if you haven’t had an MRI of your neck and sinus cavities and they are basing treatment only off of an x-ray (or “feel”). You can make your problem tremendously worse even though it may seem likes it is helping in the short run. It’s possible it could help with milder adjustments and with the right diagnostic testing - but compared to properly applied acupuncture by a well trained practitioner, honestly, the long-term efficacy is just not there.

Your leg numbness was probably just the way you were positioned on the table - I’m assuming that is completely fine at this point? And to ease your mind, actual nerve damage from acupuncture, while not entirely impossible if you basically tried to do it, or in the hands of a completely inexperienced practitioner, is technically impossible. Also, there isn’t exactly an “occipital nerve” that leads to “occipital neuralgia” - there are a whole branch of occipital nerves arising primarily from the neck and spreading out through the head - they are deep and would not even have been contacted by the needles, unless someone really had no idea what they were doing. So your nerves are as good as they were before - flared up, yes. What you feel is sensory response and interpretation from the brain, not actual damage.