There are many reasons for high blood sugar, such as stress, infection and other causes of a transient increase in blood sugar, insulin can be used to lower sugar treatment; such as diabetes requires diet, exercise therapy and drug therapy, common drugs such as metformin. Hyperglycemia refers to blood glucose higher than normal value. For hyperglycemia caused by stress, infection, etc., the blood glucose can usually return to normal after removing the triggering factors; such as diabetes mellitus requires diet and exercise therapy, and blood glucose control through medication if necessary; such as hyperthyroidism, acromegaly, etc. caused by hyperglycemia, the cause of the disease needs to be actively removed. There are many causes of hyperglycemia, if you find elevated blood sugar, you should go to the local hospital in time, to clarify the cause of the disease, under the guidance of the doctor for treatment.