question: From the upper hard palate , along the gumline between the teeth and hard palate, there is a continuous discharge of saliva which is sour and bitter. With the tip of my tougue, I could feel the sponge texture along the gumline between the teeth and hard palate. On the worse day, I can physically feel the discharge dripping from a tube/duct or spiral discharge to the hard palate. I feel like I have two sets of nose. I have seek helps from ENT, dentist , and oral surgeon, but no one can diagnose what is causing it for the past two to three years.