Some also refer to this as a diabetic coma.
Causes
HHNS develops whenglucose levels surge(typically above 600 mg/dL), leading to severe dehydration.
The result is frequent urination, which can result in serious or even life-threatening dehydration.

Ellen Lindner / Verywell
Rarely, HHNS can occur in people who have not yet been diagnosed with diabetes.
A blood glucose level of 600 mg/dL and lowketone levelsare the main factors for the diagnosis of HHNS.
Serum osmolality, a test that measures the bodys water/electrolyte balance, also is used to diagnose HHNS.
The test is done by taking a sample of blood from a vein.
It also may require IV insulin to bring down blood sugar levels.
Potassium and sometimes sodium phosphate replenishment may also be required to support cell function.
If you are hospitalized due to HHNS, you may be kept overnight for observation.
DKAis also a serious condition and potentially life-threatening if not treated promptly.
The body compensates by looking for an alternative energy source in stored fat.
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