Dry mouth syndrome is usually connected to a lot of viral infections, autoimmune disorders and now, COVID-19 as well.
Experiencing a dry mouth basically means that the mouth goes through a tough time producing saliva, which keeps your mouth lubricated, aids digestion and most importantly, keeps the mouth protected against bad bacteria and other pathogens. A dry mouth can make you feel a sense of dryness or stickiness in the mouth and further, make the saliva a little thicker.
Having bad breath is also sometimes a common sign of dry mouth. It can also induce difficulties in chewing food, speaking and make you experience a harsh, burning sensation at the roof of your mouth. Unusual symptoms such as these, right now, need to be checked out at once.