Yeah I had this too. My glands would go up and down for over 2 years. Kept being put on Cipro but they really never went down. Was told it was a sinus infection too. After I couple of years they stopped swelling. They still do swell up now and then. Have no idea why had all kinda of blood work down and all is fine. If they swell up now I just left them and sooner or later they wil go down on their own. I'm guessing it's an allergic reaction to something. I just never bothered to find out what.