Some symptoms of hyperglycemia include high blood glucose and sugar levels, frequent urination, and an increase in thirst, reports the American Diabetes Association. One way to diagnose hyperglycemia is to check an individual's blood glucose level often and compare the results to the medically recommended levels.
Hyperglycemia occurs when the body does not produce enough insulin or when the body is unable to use insulin correctly, according to the American Diabetes Association. People with Type 1 diabetes may experience the condition if they do not give their bodies enough insulin. Type 2 diabetes sufferers may have enough insulin in the body, but this insulin may not work well. Other causes of hyperglycemia include overeating, exercising too little, stress caused by illness or other problems, and an increase of hormones that usually occurs in the morning.
To deal with hyperglycemia, patients should exercise, but they should do so only if no ketones are present in their urine. Exercising while ketones are present in the urine may actually cause blood glucose levels to increase. Eating less or making other dietary changes may also help lessen the effects of hyperglycemia. If these solutions do not work, doctors may need to alter the amount of medication that patients take or the time when they take it, according to the American Diabetes Association.