symptoms of very high blood sugar
A high blood sugar level itself is a symptom of diabetes. However, an individual experiencing hyperglycemia may have no symptoms at all. Common symptoms can include: 1  Dry mouth.2  Thirst. 3  Frequent urination. 4  Urination during the night. 5  Blurry vision. 6  Dry, itchy skin. 7  Fatigue or drowsiness. high blood sugar level itself is a symptom of diabetes. However, an individual experiencing hyperglycemia may have no symptoms at all. Common symptoms can include: 1  Dry mouth.