Hi S,   I can't speak for you, but I can tell you I often have crazy, itching feelings throughout my respiratory tract, as a result of my allergies and asthma. It's not always in the same place, and it's not always even a symptom I have during an allergy attack. But when it comes, as you know, it's maddening because there is nothing you can do to relieve it, other than just wait for it to pass.   So it may be that you're having an allergic reaction to something in your environment. You may want to keep a journal to try and pinpoint when it comes on, what you may have been doing at the time, etc.   Also, don't hesitate to talk with your doctor about how you are feeling and to find out if there might be another explanation.   To your health, Kathi