A few years ago I was having several sinus infections and was told by the ENT docs that surgery was necessary, then I went to an Integrative Clinic (real docs) and was told it was no doubt a fungal infection and to avoid sugar and yeast containing foods as these "feed" fungal infections and was also given a homeopathic for fungal treatment. Within a short time I was feeling great, then eventually went on a gluten free diet and still do that. That was probably 10 years ago. Perhaps if you can do away with the sugar and yeast foods and see what happens? Best of health~~Baz