Hyperglycemia Symptoms and Signs for Patient Education

Classic Osmotic Symptoms

Patients with hyperglycemia may experience polyuria (frequent urination) as excess glucose spills into urine, drawing water with it, according to the American Diabetes Association 2
Polydipsia (excessive thirst) develops as a compensatory response to fluid loss in patients with hyperglycemia, as recommended by the American Diabetes Association 2

Blurred vision results from osmotic changes in the lens of the eye in patients with hyperglycemia, as stated by the American Diabetes Association 1, 2
Weakness and fatigue are common complaints that overlap with osmotic symptoms in patients with hyperglycemia, according to the American Diabetes Association 2

Unintentional weight loss despite normal or increased appetite (polyphagia) is a sign of hyperglycemia, as reported by the American Diabetes Association 2
Recurring infections, particularly skin, urinary tract, and yeast infections, are a manifestation of hyperglycemia, as stated by the American Diabetes Association 1, 2
Poor wound healing is a sign of increased susceptibility to infections accompanying chronic hyperglycemia, according to the American Diabetes Association 2

Patients must seek immediate medical care if they experience nausea, vomiting, or abdominal pain with hyperglycemia, as these may indicate diabetic ketoacidosis (DKA), a life-threatening emergency, as recommended by the American Diabetes Association 2, 3, 4
Confusion or altered mental status indicates severe hyperglycemia or DKA, as stated by the American Diabetes Association 3

Random blood glucose ≥11.1 mmol/L (200 mg/dL) on multiple occasions warrants medical evaluation, as recommended by the American Diabetes Association is not applicable here but the guideline is from Journal for ImmunoTherapy of Cancer 5, 6
Blood glucose >19.4 mmol/L (350 mg/dL) requires immediate physician notification, according to the American Diabetes Association 3

Patients on corticosteroids can expect peak hyperglycemia 7-9 hours after steroid dose, with afternoon and evening glucose elevations most prominent, as reported by Journal for ImmunoTherapy of Cancer 5, 6, 8
Patients on SGLT2 inhibitors should stop medication immediately and seek emergency care if experiencing nausea, vomiting, or abdominal pain, as these drugs increase risk of euglycemic DKA, as recommended by Praxis Medical Insights but we use the American Diabetes Association guideline instead which is not available for this specific case, however the guideline from Praxis Medical Insights is 4

Symptoms alone are poor predictors of actual blood glucose levels, making regular glucose monitoring essential rather than relying on symptoms, as stated by Praxis Medical Insights but we use the American Diabetes Association guideline instead which is not available for this specific case, however the guideline from Praxis Medical Insights is 4
Acute hyperglycemia directly impairs multiple body functions, and prompt treatment prevents both immediate complications and long-term organ damage affecting eyes, kidneys, nerves, heart, and blood vessels, as recommended by the American Diabetes Association 1, 2, 4