Hyperglycemiahigh blood sugaris commonly associated with people who have diabetes, but it can also impact those without diabetes.
These symptoms may be subtle and easily go unnoticed, so the condition often goes untreated.
Nondiabetic hyperglycemia most often occurs if your body has undergone some bang out of trauma or stressful event.

Illustration by Jessica Olah for Verywell Health
Illustration by Jessica Olah for Verywell Health
What Does High Blood Sugar Feel Like?
The symptoms of nondiabetic hyperglycemia are similar to those of diabetic hyperglycemia.
Why Do People Without Diabetes Get High Blood Sugar?

High blood sugar in people without diabetes is often related to stress hormones or how your body processes insulin.
It can happen during an injury or stressful event or may be an ongoing issue.
Insulin Resistance and Prediabetes
Insulinis a hormone produced by the pancreas that helps your cells store glucose.
Insulin resistance is when your body doesn’t respond to insulin as it should.
If your cells become resistant to insulin and its effects, it causes a rise in blood sugar.
Prediabetes is when blood sugar is chronically elevated but not enough to be diagnosed with diabetes.
This may happen during traumatic injuries, serious illnesses, or during periods of intense anxiety and emotional stress.
The high cortisol can increase your risk of prediabetes and hyperglycemia.
Treatments may involve surgery or a reduction in medication.
MedlinePlus.High blood sugar - self-care.
Centers for Disease Control and Prevention.Manage blood sugar.
National Institute of Diabetes and Digestive and Kidney Diseases.Insulin resistance and prediabetes.
2020;27(3):140-145. doi:10.1097/MED.0000000000000537
Centers for Disease Control and Prevention.Diabetes symptoms.
Centers for Disease Control and Prevention.Diabetic ketoacidosis.
National Institute of Diabetes and Digestive and Kidney Diseases.Cushing’s syndrome.
Department of Health and Human Services.Physical activity guidelines for Americans.