Diabetes-Related High and Low Blood Sugar Levels - Topic Overview
You may have symptoms of low blood sugar if your blood sugar
drops from a high level to a lower level. For example, if your blood sugar
level has been higher than 300 mg/dL for a week or so and the level drops
suddenly to 100 mg/dL, you may have symptoms of low blood sugar even though
your blood sugar is in the normal range. But if you have had diabetes for many
years, you may not have symptoms of low blood sugar until your blood sugar
level is very low.
If your doctor thinks you have low blood sugar
levels but you are not having symptoms, he or she may ask you to check your
blood sugar more often. Your doctor may ask you to check your blood sugar in
the middle of the night or to do a 3-day test using a continuous glucose monitor .
Check your symptoms to decide if and when
you should see a doctor.