Dry mouth syndrome is usually associated with many viral infections, autoimmune disorders and now also COVID-19.
If you experience a dry mouth, it means that the mouth is very difficult to produce saliva, which keeps your mouth lubricated, promotes digestion and most importantly, it protects the mouth from bad bacteria and other pathogens. If you have a dry mouth, you may have a feeling of dryness or stickiness in the mouth and make the saliva a little thicker.
Bad breath is sometimes also a common sign of dry mouth. It can also cause problems chewing food, talking and causing a hard, burning sensation on the roof of your mouth. Unusual symptoms such as these should be checked immediately.