Oh my gosh, allergy season has been terrible this year! I'm in the Midwest and where my allergy medication (just take otc claritan) has held me steady in the past several years, not so this year. I'm itching and running like crazy. So, you breath in and get this sensation? Could be allergies but what about teeth issues? Any issues with your gums? Lots of nerves there. And what about your sinuses? Do you take any allergy medication?