question: For the couple of weeks I have been drinking alot of water almost nonstop (very thirsty) which is causing me to pee nonstop. The past couple of days I have had a very dry mouth and dry lips and things are looking unfocused.  It is usually if I go outside and I am thinking its because of the polon.  I have been tested for diabetes, blood pressure, etc and everything is normal.  What could this be?