I hadn't heard of this, but the lack of a control group leaves open the pretty obvious alternative explanation that the allergy simply goes away on its own over

I hadn't heard of this, but the lack of a control group leaves open the pretty obvious alternative explanation that the allergy simply goes away on its own over time. There does seem to be some kind of "there" there in acupuncture, and it doesn't seem impossible that poking a nerve sends a signal to the brain with non-obvious effects. So I suppose this warrants further investigation, especially since it's inexpensive. But I remain skeptical. Anything potent enough to have a positive effect can also have a negative effect, and I would expect the negative effect to be more likely.