I have been tested by an allergist and an ENT and neither showed anything, but I still continue this pain. I'll describe briefly and maybe someone has heard of it. My nose feels as if I am holding a carbonated soda under it and the bubbles are going up my nose with pressure under my eyes. The last two days I have had a pain in the back of my head (left side) that comes and goes and the pain shoots forward to my sinuses. I know this sounds crazy, but the pain....I can't think of what other avenue to persue. FYI-I have also had a clear MRI. I am debating on trying that York Labs. in Florida (do they have a good reputation?) for food allergies, but I don't know if allergies happen without the usual feeling of red, itchy eyes and the sniffles, etc.. Thanks to anyone with some advice!