Dry mouth syndrome is usually linked to many viral infections, autoimmune diseases and now COVID-19.
Experiencing dry mouth basically means that the mouth has a hard time producing saliva, which keeps your mouth lubricated, aids digestion, and most importantly protects the mouth from bad bacteria and other pathogens. A dry mouth can cause a feeling of dryness or stickiness in the mouth and the saliva can also get a little thicker.
Bad breath is also a common sign of dry mouth. It can also cause difficulty chewing food, speaking and giving you a hard burning sensation in the top of your mouth. Unusual symptoms like these should be checked immediately at this point.