My whole life from my youth till my sixties I had these problems.
I came to CZ in 2003 since I had a gallstone and started liverflushing. In May I realized that all the sinus pain and fog was gone. And it never has come back, though I still have my gallstone :)
My original symptoms were sinus pain, slugginess and often thought my teeth were infected and would rinse my mouth with salt water. Often my ears were itchy and in the morning a slight sore throat.
Of course there might be different reasons for these problems, though in my case may be it was allergies though I had it year round.