Hi Gabriel, How’s it going with this? I’ve dealt with nearly the exact same problem and potential solutions (sinus issues, GERD, Buteyko), as well as recurrence after a couple of years without issues.
I’ve noticed that the SOB/air hunger coincides with going back on a low-carb diet. This led me to suspect GERD from foods with a higher fat content at first, but after reading a post on a different forum, I’m now looking into histamine intolerance and a few foods that I tend to eat a lot more (and probably way too much) now that I’m eating less carbs (namely almonds, almond products and other nuts, 100% cacao, and fermented dairy), all of which are known for triggering histamine intolerance.
I do notice though, that a psychological element also comes into play once the symptoms appear, as I begin to obsess over my breathing and its mysterious cause, and it definitely exacerbates the problem. I also find that the issue subsides when I’m deeply engrossed in a task but immediately returns the moment I realize I haven’t felt the need to yawn or sigh in a while.
Anyway, just looking to commiserate and brainstorm if you haven’t resolved the problem yet. Take good care,
Kristina