What to do when you have high blood sugar Diabetes Home Blood Sugar What are blood sugars? Why your blood sugars change When to check your blood sugars What do your blood sugars mean? Low blood sugar What is low blood sugar What does low blood sugar feel like? You think you have low blood sugar. What do you do? Why do you get low blood sugar? High blood sugar What is high blood sugar? Why do you get high blood sugar? What does high blood sugar feel like? What to do when you have high blood sugar You may need to go to the hospital when you have high blood sugar How to check your blood sugar How to use a blood sugar meter CGM Libre Tell a support person. 2. Check your blood sugars. Work out what to do next Ask your diabetes educator to make a plan for you. You might need to take more short acting insulin when you have high blood sugars. Test your blood sugars more. 5. Test for ketones. Drink lots of water. Having high blood sugars makes you thirsty and pee a lot. Do you get high blood sugars a lot? Talk to your diabetes team You might have to change your insulin dose your diabetes team will help you Back Diabetes Home Next This is general information. Talk to your doctor for information made for you.