Are you on any meds? Dry mouth is one of the most common symptoms of most of the meds we take. If you have that skin condition, it's unlikely to be caused by anxiety as it's a fungal infection and you can't invent a fungus in your mind, but you can if you're anxious enough all the time and don't sleep well and don't eat well lower your immune system that fights off fungal infections. If you've taken antibiotics regularly for this, it makes it much more likely to recur, so that's also a factor. Those antibiotics can also cause dry mouth. Not everything is anxiety, but it does make everything worse.