Dry mouth
According to the National Institute of Diabetes and Digestive and Kidney Diseases, one of the most prevalent mouth symptoms of diabetes is dry mouth (NIDDKD). Doctors aren't sure why diabetes causes dry mouth or xerostomia. They believe it is caused by excessive blood sugar, often known as hyperglycemia, which is linked to diabetes.
Among the signs of dry mouth are:
- the mouth is continually dry
- trouble chewing, swallowing, or speaking
- dry, cracked lips
- sores or infections in the mouth
- rough, dry tongue
