Managing changes in your blood sugar As part of your diabetes care plan, it’s important to know what to do if your blood sugar goes too high or too low. Blood sugar that’s too high or too low can cause symptoms that can be mistaken for other problems. That’s why it’s important for you to always wear your medical ID. The ID should show that you have diabetes and should tell others what you might need in an emergency. Knowing when your blood sugar is high High blood sugar (also called hyperglycemia) is when there is too much sugar in your blood. Over time, it can cause serious health problems. High blood sugar can happen if you: Skip a dose of insulin or other diabetes medicines Eat more than usual Are less active than usual Are under stress or are sick If your blood sugar is too high, you may: Feel very thirsty or hungry Need to pass urine more than usual Feel like your mouth and skin are dry Have blurry vision Feel sleepy
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