Sick-Day Rules for People With Diabetes
Answers to common questions about sick-day rules for people with diabetes.
Questions on this page
Why does illness increase blood sugar?
Infection and physical stress increase hormones such as cortisol and adrenaline, which can raise blood glucose.
Should I check my glucose more frequently when sick?
People with diabetes may need more frequent glucose monitoring during significant illness.
Should I check ketones?
People at risk of DKA, particularly those with type 1 diabetes, may need ketone testing during illness or when glucose is elevated, according to their sick-day plan.
Should I stop my insulin during illness?
Do not stop insulin automatically. People with type 1 diabetes particularly need ongoing basal insulin even when they are not eating, unless their treating team has given a specific alternative plan.
When should I go to hospital?
Go urgently if you have persistent vomiting, significant ketones, difficulty breathing, severe dehydration, confusion or worsening symptoms despite following your sick-day plan.