Diabetes and endocrinology emergencies

​​​​If any of the following are present or suspected, please refer the patient to the emergency department (via ambulance if necessary) or seek emergency medical advice via phone to on-call consultant/registrar.

This emergency criteria are not an exhaustive list of diabetes and endocrinology emergencies. Health professionals should refer to HealthPathways for more information.

On this page​​

Adult patients (aged 16 years or over) ​

Gestational diabetes

  • Acute, severe hyperglycaemia or hypoglycaemia requiring immediate assistance
  • Diabetic ketoacidosis
  • Gestational diabetes with severe vomiting

Other diabetes mellitus types

  • Acute, severe diabetes-related end-organ complication (e.g. suspected acute coronary syndrome, cerebrovascular event, infected foot ulcer with systemic features, new vision loss, or renal failure)
  • Clinical features suggesting diabetic ketoacidosis or euglycaemic ketoacidosis (i.e. clinical dehydration, rapid or laboured [Kussmaul] breathing, recurrent vomiting, reduced level of consciousness, or haemodynamically compromised with tachycardia or hypotension)
  • Diabetes-related foot ulceration with absent pulses
    Note: refer to a vascular surgeon or high-risk foot service
  • Diabetes-related foot ulceration with features of severe or systemic infection
    Note: refer immediately to emergency department and/or high-risk foot service
  • High ketones unresponsive to initial management (i.e. moderate or greater result on urine testing or > 1.5 mmol/L
    on finger prick blood test)
  • Recurrent, persistent vomiting for > 4 hours preventing oral intake and hydration
  • Severe hypoglycaemia requiring third party assistance including that occurring with loss of consciousness
    Note: referral to endocrinologist or diabetes service is indicated for rapid access outpatient appointment within 24 hours. If no medical-led specialist outpatient service is available, present to an emergency department.
  • Suspected or symptomatic hyperosmolar hyperglycaemic state (HHS) (i.e. polyuria, polydipsia, altered mental state, dehydration) with acute illness and/or persistent hyperglycaemia
  • Suspected or diagnosed active Charcot neuro-osteo-arthropathy (i.e. clinical signs of inflammation, particularly redness, heat and/or swelling, in the neuropathic foot)
    Note: same-day referral to a high-risk foot service (or similar service to manage Charcot foot)

Type 1 diabetes

  • Acute, severe diabetes-related end-organ complication (e.g. suspected acute coronary syndrome, cerebrovascular event, infected foot ulcer with systemic features, new vision loss, or renal failure)
  • Clinical features suggesting diabetic ketoacidosis or euglycaemic ketoacidosis (i.e. clinical dehydration, rapid or laboured [Kussmaul] breathing, recurrent vomiting, reduced level of consciousness, or haemodynamically compromised with tachycardia or hypotension)
  • Diabetes-related foot ulceration with absent pulses
    Note: refer to a vascular surgeon or high-risk foot service
  • Diabetes-related foot ulceration with features of severe or systemic infection
    Note: refer immediately to emergency department and/or high-risk foot service
  • High ketones unresponsive to initial management
    (i.e. moderate or greater result on urine testing or > 1.5 mmol/L on finger prick blood test)
  • New diagnosis of type 1 diabetes suspected with clinical instability (e.g. rapid weight loss, polyuria, polydipsia and
    blood glucose > 15.0 mmol/L)
  • Pre-existing type 1 diabetes with new onset, persistent hyperglycaemia and clinically unwell (i.e. blood glucose level
    > 15.0 mmol/L for > 4 hours)
  • Pregnant patient with persistent blood glucose level of > 10.0 mmol/L and/or blood ketones
    > 0.6 mmol/L unresponsive to initial management
  • Pregnant patient with persistent blood glucose level of < 3.5 mmol/L (confirmed by finger prick test, where possible) unresponsive to initial management
  • Recurrent, persistent vomiting for > 4 hours preventing
    oral intake and hydration
  • Severe hypoglycaemia requiring third party assistance including that occurring with loss of consciousness
    Note: referral to endocrinologist or diabetes service is indicated for rapid access outpatient appointment within 24 hours. If no medical-led specialist outpatient service is available, present to an emergency department.
  • Suspected or diagnosed active Charcot neuro-osteo-arthropathy (i.e. clinical signs of inflammation, particularly redness, heat and/or swelling, in the neuropathic foot)
    Note: same-day referral to a high-risk foot service (or similar service to manage Charcot foot)

Type 2 diabetes

  • Acute, severe diabetes-related end-organ complication
    (e.g. suspected acute coronary syndrome, cerebrovascular event, infected foot ulcer with systemic features, new vision loss, or renal failure)
  • Clinical features suggesting diabetic ketoacidosis (even if glucose is normal) (i.e. clinical dehydration, rapid or laboured [Kussmaul] breathing, recurrent vomiting, reduced level of consciousness, haemodynamically compromised with tachycardia or hypotension, urine ketones +++, or > 1.5 mmol/L blood ketones)
  • Diabetes-related foot ulceration with absent pulses
    Note: refer to a vascular surgeon or high-risk foot service
  • Diabetes-related foot ulceration with features of severe or systemic infection
    Note: refer immediately to emergency department and/or high-risk foot service
  • High ketones unresponsive to initial management (i.e. moderate or greater result on urine testing or > 1.5 mmol/L
    on finger prick blood test)
  • Pregnant patient with persistent blood glucose level of
    > 10.0 mmol/L and/or blood ketones > 0.6 mmol/L unresponsive to initial management
  • Pregnant patient with persistent blood glucose level of
    < 3.5 mmol/L (confirmed by finger prick test, where possible) unresponsive to initial management
  • Recurrent, persistent vomiting for > 4 hours preventing
    oral intake and hydration
  • Severe hypoglycaemia requiring third party assistance including that occurring with loss of consciousness
    Note: referral to endocrinologist or diabetes service is indicated for rapid access outpatient appointment within 24 hours. If no medical-led specialist outpatient service is available, present to an emergency department.
  • Suspected or diagnosed active Charcot neuro-osteo-arthropathy (i.e. unilateral foot condition with features of peripheral neuropathy, hyperaemia, increased foot skin temperature by 2 degrees or above, restricted joint range of motion, changes in foot shape, oedema, pain and/or bounding pulses)
    Note: same-day referral to a high-risk foot service (or similar service to manage Charcot foot)
  • Suspected or symptomatic hyperosmolar hyperglycaemic state (HHS) (i.e. polyuria, polydipsia, altered mental state, dehydration) with acute illness and/or persistent hyperglycaemia
  • Unable to tolerate oral fluids and blood glucose levels continue to drop during sick day management
  • Unresolved severe hypoglycaemia despite treatment
    Note: patient also should be referred to a medical practitioner for review of diabetes type, ongoing management and driving safety

Adrenal disorders

  • Hypopituitarism with haemodynamic compromise or systemic symptoms
  • Symptomatic severe hypertension > 180/110 mmHg due to suspected hormonal excess (e.g. phaeochromocytoma,
    primary aldosteronism)
  • Suspected or confirmed acute adrenal insufficiency
    (as indicated by hypotension, vomiting, hyponatraemia, hyperkalaemia, anorexia and/or nausea)

Osteoporosis and metabolic bone disease

  • Acute anterior uveitis on bisphosphonates (e.g. erythema, photophobia, blurred vision)
    Note: urgent ophthalmology assessment is indicated
  • Acute, severe hypophosphatemia
  • Radiologically suspected or confirmed atypical femoral fracture
    Note: subsequent endocrinology or rheumatology review may be indicated
  • Severe, symptomatic hypocalcaemia (albumin-corrected serum calcium < 1.9 mmol/L)
    due to metabolic bone disease or its treatment (e.g. denosumab-related, hypoparathyroidism such as post-thyroidectomy or spontaneous, severe vitamin D deficiency)
  • Severe, symptomatic hypercalcaemia (albumin-corrected serum calcium > 3.0 mmol/L)
    due to metabolic bone disease or its treatment (e.g. hyperparathyroidism, vitamin D toxicity, teriparatide therapy)
  • Vertebral fracture following delay or recent discontinuation of denosumab
    Note: refer to neurosurgery if neurological symptoms
  • Vertebral fracture with severe pain or signs of neurological compromise

Pituitary disorders

  • New onset adrenal insufficiency or hypopituitarism
  • Suspected or confirmed arginine vasopressin deficiency (AVP-D; previously known as cranial diabetes insipidus) with hypernatraemia > 150 mmol/L or hyponatraemia < 125 mmol/L with AVP-D already on treatment
  • Suspected pituitary tumour with any of the following features:
    • Acute new visual field defect (often initially unilateral temporal field loss progressing to classic bitemporal superior quadrantanopia or hemianopia)
    • Hyponatraemia < 125 mmol/L
    • Neurological signs or symptoms
    • Ophthalmoplegia (pituitary apoplexy)
    • Symptomatic cortisol insufficiency
    • Thunderclap headache

Thyroid and parathyroid disorders

  • Agranulocytosis or neutropenic sepsis in patient taking carbimazole or propylthiouracil
  • Any symptoms suggestive of hypocalcaemia post-thyroid or post-parathyroid surgery
  • Thyroid mass with any of the following features:
    • Airway compromise
    • Breathing difficulty
    • Drooling
    • Haemoptysis
    • Severe odynophagia
    • Stridor
    • Sudden increase in size or pain over days to weeks
    • Sudden voice change
  • Corrected serum calcium > 3.0 mmol/L with symptomatic hypercalcaemia (e.g. nausea and vomiting or volume depletion, alteration in mental status, or acute kidney injury)
  • Corrected serum calcium > 3.5 mmol/L
  • Corrected serum calcium < 1.9 mmol/L with symptomatic hypocalcaemia (e.g. seizures or tetany)
  • Hyperthyroidism complicated by cardiac or respiratory compromise, or other indications of severe illness (i.e. fever, vomiting, labile blood pressure or altered mental state)
  • Hyperthyroidism with hypokalaemia and paralysis
  • Reduced visual acuity in Graves' disease
    Note: refer to ophthalmology state-wide referral criteria
  • Suspected myxoedema coma

Paediatric patients (aged 0 to 15 years)

Type 1 diabetes

  • Concerns of ketoacidosis with known type 1 diabetes and
    any of the following symptoms or results:
    • > 2 vomiting episodes
    • Abdominal pain
    • Altered conscious state
    • Headache
    • Inability to eat (even if not vomiting)
    • Ketones; blood > 1.5 mmol, urine moderate or large
    • Shortness of breath
    • Systemic symptoms (i.e. fever, lethargy)
  • Known type 1 diabetes with any of the following features:
    • Persistent vomiting with hypoglycaemia or hyperglycaemia or inability to tolerate
      oral fluids
    • Severe hypoglycaemia (i.e. coma, convulsions, altered consciousness)
  • New diagnosis or suspicion of type 1 diabetes as indicated by any of the following symptoms or results:
    • HbA1c > 6.5%
    • Oral glucose tolerance test (OGTT) with fasting blood glucose level > 7.0 mmol/L and/or 2 hours > 11.1 mmol/L
    • Polyuria and/or polydipsia
    • Random blood glucose level > 11.0 mmol/L

Type 2 diabetes

  • Known type 2 diabetes with any of the following features:
    • Abdominal pain
    • Altered conscious state
    • Ketones; blood > 1.5 mmol/L, urine moderate or large
    • Persistent vomiting with hypoglycaemia or hyperglycaemia or inability to tolerate
      oral fluids
    • Severe hypoglycaemia (i.e. coma, convulsions, altered consciousness)
    • Vomiting
  • New diagnosis of or suspicion for type 2 diabetes as indicated by any of the following features:
    • HbA1c > 6.5%
    • Oral glucose tolerance test (OGTT) with fasting blood glucose level > 7.0 mmol/L and/or 2 hours > 11.1 mmol/L
    • Polyuria and/or polydipsia
    • Random blood glucose level > 11.0 mmol/L

Adrenal disorders

  • Adrenal crisis (i.e. haemodynamic compromise) associated
    with vomiting, and/or hyponatraemia, and/or hypoglycaemia resulting in unconsciousness or seizure
  • Phaeochromocytoma in crisis with uncontrolled hypertension
  • Severe and symptomatic (e.g. headaches) hypertension, or
    high or fluctuating blood pressure with headaches, visual disturbance or other neurological symptoms
  • Suspected or confirmed new diagnosis of acute adrenal insufficiency
  • Suspected pituitary mass (e.g. symptoms of visual field loss or central nervous system signs)
    Note: refer to pituitary disorders state-wide referral criteria

Calcium and bone disorders

  • Corrected serum calcium < 1.8 mmol/L or ionised calcium
    < 0.9 mmol/L
  • Corrected serum calcium < 2.0 mmol/L with symptoms
    (e.g. seizures, cardiac arrhythmias, tetany, paraesthesia)
  • Corrected serum calcium ≥ 3.0 mmol/L, with or without symptoms of hypercalcaemia
    (e.g. cardiac arrhythmias, vomiting, altered mental state)

Growth disorders

  • Myxoedema coma
  • Suspected adrenal crisis or first diagnosis of adrenal insufficiency, including unexplained hyponatramia, hypoglycaemia and or myxoedema coma
  • Suspected pituitary mass (e.g. symptoms of visual field loss or central nervous system signs)
    Note: refer to pituitary disorders paediatric state-wide referral criteria

Pituitary disorders

  • Hypoglycaemia in which adrenal insufficiency and/or growth hormone deficiency is suspected as the cause
  • New onset or suspected diabetes insipidus (anti-diuretic hormone deficiency or resistance), including unexplained hypernatraemia and dehydration
  • Suspected adrenal crisis or first diagnosis of adrenal insufficiency
  • Suspected pituitary mass with or without neurological symptoms and visual signs (e.g. headaches, visual field loss, blurred vision)
  • Vomiting or altered level of consciousness with known adrenal insufficiency

Pubertal disorders

Thyroid disorders

  • Agranulocytosis in a child or young person taking carbimazole or propylthiouracil
  • Hyperthyroidism complicated by cardiac, respiratory compromise, pregnancy, or other indications of severe illness (fever, vomiting, labile blood pressure, altered mental state)
  • Hyperthyroidism with hypokalaemia or paralysis
  • Neonatal Grave's disease
  • Neonate with abnormal newborn screening test
    Note: emergency medical advice via phone is indicated
  • Possible tracheal or superior vena cava obstruction from retrosternal thyroid enlargement
  • Stridor associated with a thyroid mass
  • Suspected myxoedema coma (altered consciousness, hypothermia, fluid overload, bradycardia, hyponatraemia)
Current as at: Monday 23 March 2026
Contact page owner: System Purchasing