You have ketones. What do you do? Diabetes Home Sick days When to follow your sick day plan Go to hospital when What are ketones? How do ketones happen? What to do when you have ketones You have ketones. How do you feel? You have ketones. What do you do? Follow your sick day plan. Do not wait. You need an ambulance when you can not follow your sick day plan. you do not feel better. you and your support people are very tired. You can not look after your diabetes. Back Diabetes Home This is general information. Talk to your doctor for information made for you.