• Introduction to diabetes
• Treatment & your health
• Living with diabetes
• What care to expect
• Year of care
• Complications
• Short term complications
• Hypoglycaemia
• Diabetic Ketoacidosis
• Hyperosmolar non-ketotic acidosis (HONK)
• Long term complications
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• My life - for young people with diabetes

Hyperosmolar non-ketotic acidosis (HONK)

Hyperosmolar non-ketotic acidosis (HONK) occurs in people with Type 2 diabetes, who may be experiencing very high blood glucose levels (often over 40mmol/l). It can develop over a course of weeks and symptoms can include frequent urination and great thirst, nausea, dry skin, disorientation and, in later stages, drowsiness and a gradual loss of consciousness.

Its names refers to the fact that it does not usually lead to the presence of ketones in the urine, as occurs in ketoacidosis. Ketones develop when the blood glucose level is high and a lack of insulin is available to the body, which would normally allow glucose to enter the cells for energy. Because people with Type 2 diabetes may still be producing some insulin, these acidic by-products may not be created.

Hospital treatment for HONK involves replacing the lost fluid caused by high glucose levels and the administration of insulin through a vein, to bring the blood glucose down to an acceptable level.