Hi, Since mid Oct I ve had headaches, blurry eyesight, scratchy throat, ringing in ears and it feels like cotton in my ears, I can t sleep and this also happened last year at the same time. It last approx. from Oct -Dec 1 when I go to Big White in Canada, it goes away. I ve had a CAT scan and all kinds of blood and urine tests and the doctor doesn t know what s wrong with me saying, Maybe allergies. He and a few other people in town have the same thing, but it goes undiagnosed. No allergy meds have helped. Any ideas? Thanks! Emi emiken