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EM TopicsEndocrine emergencies

EM · Endocrine emergencies

Adrenal crisis (Addisonian crisis)

Also known as Addisonian crisis · Acute adrenal insufficiency · Adrenal emergency · Glucocorticoid crisis

Adrenal crisis (Addisonian crisis) is the acute, life-threatening state of cortisol deficiency producing vasodilatory shock refractory to fluid, abdominal pain, vomiting and the classic biochemistry of hyponatraemia, hyperkalaemia and hypoglycaemia. The triggers are an infection, surgery, trauma, sepsis and the abrupt withdrawal of chronic steroids. The Fellowship-critical management is an initial intravenous bolus of hydrocortisone 100 mg followed by 200 mg over the first 24 hours, 0.9 per cent saline 1 L within the first hour, and glucose if hypoglycaemic — fludrocortisone is not needed acutely because hydrocortisone has mineralocorticoid activity at the high doses. Hydrocortisone is never delayed for the cortisol result: the blood is drawn but treatment is immediate. The differential is septic shock, the upper gastrointestinal bleed and diabetic ketoacidosis. ACEM-primary, globally tagged.

high17 referencesUpdated 26 July 202616 min readVerification in progress

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ACEMFRCEMABEMFRCPCCCFPEMEBEEM

Red flags

  • Suspect adrenal crisis in any undifferentiated shock that is refractory to fluid — especially with hyponatraemia, hyperkalaemia and hypoglycaemia together
  • Give parenteral hydrocortisone immediately on suspicion — never wait for the cortisol result; draw the cortisol and ACTH first, then give an initial intravenous bolus of 100 mg and treat empirically
  • Abrupt withdrawal or reduction of chronic exogenous steroids is a leading preventable precipitant — ask every sick patient about a steroid card, inhalers and a recent taper
  • Hyperpigmentation of the palmar creases, buccal mucosa and old scars points to chronic primary Addison disease — the crisis is the decompensation of a long-standing deficiency
  • Fludrocortisone is not needed acutely — high-dose hydrocortisone covers the mineralocorticoid deficit; fludrocortisone is for the maintenance phase only
  • Recheck the glucose — hypoglycaemia is common, may be profound, and is easily missed in the shocked or comatose patient
On this page

Related topics

  • Sepsis and septic shock — the emergency department approach
  • DKA, HHS and hypoglycaemia
  • Upper gastrointestinal bleed
  • Thyroid emergencies — thyroid storm and myxoedema coma
  • Fluid resuscitation in the emergency department
  • Electrolyte emergencies — potassium and sodium
  • Cardiogenic shock in the emergency department
Study tools

Your progress

Saved on this device.

Practise this topic8 MCQs with explanations

Target exams

ACEMFRCEMABEMFRCPCCCFPEMEBEEM

Red flags

  • Suspect adrenal crisis in any undifferentiated shock that is refractory to fluid — especially with hyponatraemia, hyperkalaemia and hypoglycaemia together
  • Give parenteral hydrocortisone immediately on suspicion — never wait for the cortisol result; draw the cortisol and ACTH first, then give an initial intravenous bolus of 100 mg and treat empirically
  • Abrupt withdrawal or reduction of chronic exogenous steroids is a leading preventable precipitant — ask every sick patient about a steroid card, inhalers and a recent taper
  • Hyperpigmentation of the palmar creases, buccal mucosa and old scars points to chronic primary Addison disease — the crisis is the decompensation of a long-standing deficiency
  • Fludrocortisone is not needed acutely — high-dose hydrocortisone covers the mineralocorticoid deficit; fludrocortisone is for the maintenance phase only
  • Recheck the glucose — hypoglycaemia is common, may be profound, and is easily missed in the shocked or comatose patient
The one-line answer

Adrenal crisis is acute, life-threatening cortisol deficiency producing a vasodilatory shock refractory to fluid, with abdominal pain, vomiting, and the biochemical fingerprint of hyponatraemia, hyperkalaemia (primary only) and hypoglycaemia. The single defensible act is parenteral hydrocortisone immediately on suspicion — an initial bolus of 100 mg intravenously, followed by 200 mg over the first 24 hours as a continuous infusion or 50 mg every six hours. The random cortisol and ACTH are drawn first but never delay treatment. Run in 0.9 percent saline, 1 L within the first hour, give glucose for the hypoglycaemia, and find the precipitant. Fludrocortisone is for the maintenance phase only — the high-dose hydrocortisone saturates the mineralocorticoid receptor.[2][10][11]

Meet the patient

A 52-year-old woman with known autoimmune Addison disease is brought in after two days of vomiting and diarrhoea. She stopped her oral hydrocortisone 36 hours ago because she could not keep it down. She is drowsy, profoundly hypotensive at 74/44, with pigmented palmar creases and buccal mucosa. The venous gas shows glucose 2.4, sodium 122, potassium 7.6, and the ECG shows peaked T waves with a widened QRS.[1]

The two questions that decide her next hour are the two that decide every adrenal crisis: is this refractory vasodilatory shock with the cortisol-deficient fingerprint? (the biochemistry and the history answer immediately) and can I give hydrocortisone before the cortisol result? (always — the cost of one empirical dose is trivial, the cost of delay is death).[1]

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References17ShowHide
  1. [1]Bornstein SR, Allolio B, Arlt W, et al. Diagnosis and Treatment of Primary Adrenal Insufficiency: An Endocrine Society Clinical Practice Guideline J Clin Endocrinol Metab, 2016.PMID 26760044
  2. [2]Allolio B Extensive expertise in endocrinology. Adrenal crisis Eur J Endocrinol, 2015.PMID 25288693
  3. [3]Husebye ES, Allolio B, Arlt W, et al. Consensus statement on the diagnosis, treatment and follow-up of patients with primary adrenal insufficiency J Intern Med, 2014.PMID 24330030
  4. [4]Puar TH, Stikkelbroeck NM, Smans LC, Zelissen PM, Hermus AR Adrenal Crisis: Still a Deadly Event in the 21st Century Am J Med, 2016.PMID 26363354
  5. [5]Hahner S, Spinnler C, Fassnacht M, et al. High incidence of adrenal crisis in educated patients with chronic adrenal insufficiency: a prospective study J Clin Endocrinol Metab, 2015.PMID 25419882
  6. [6]Bancos I, Hahner S, Tomlinson J, Arlt W Diagnosis and management of adrenal insufficiency Lancet Diabetes Endocrinol, 2015.PMID 25098712
  7. [7]Annane D, Sébille V, Charpentier C, et al. Effect of treatment with low doses of hydrocortisone and fludrocortisone on mortality in patients with septic shock JAMA, 2002.PMID 12186604
  8. [8]Sprung CL, Annane D, Keh D, et al. Hydrocortisone therapy for patients with septic shock N Engl J Med, 2008.PMID 18184957
  9. [9]Annane D, Renault A, Brun-Buisson C, et al. Hydrocortisone plus Fludrocortisone for Adults with Septic Shock N Engl J Med, 2018.PMID 29490185
  10. [10]Martel-Duguech L, Poirier J, Bourdeau I, et al. Diagnosis and management of secondary adrenal crisis Rev Endocr Metab Disord, 2024.PMID 38411891
  11. [11]Prete A, Taylor AE, Bancos I, et al. Prevention of Adrenal Crisis: Cortisol Responses to Major Stress Compared to Stress Dose Hydrocortisone Delivery J Clin Endocrinol Metab, 2020.PMID 32170323
  12. [12]Götz H, Amrein K Update on adrenal crisis Best Pract Res Clin Anaesthesiol, 2026.PMID 42552014
  13. [13]Biagetti B, Marques P, Ntali G, et al. Management of endocrine disease: update on the management of pituitary apoplexy Eur J Endocrinol, 2026.PMID 41699778
  14. [14]Arlt W, Baldeweg SE, Pearce SHS, Simpson HL ENDOCRINOLOGY IN THE TIME OF COVID-19: Management of adrenal insufficiency Eur J Endocrinol, 2020.PMID 32379699
  15. [15]Hahner S, Allolio B Management of adrenal insufficiency in different clinical settings Expert Opin Pharmacother, 2005.PMID 16259572
  16. [16]Chan CM, Mitchell AL, Shorr AF Etomidate is associated with mortality and adrenal insufficiency in sepsis: a meta-analysis Crit Care Med, 2012.PMID 22971586
  17. [17]Miller BS, Spencer SP, Geffner ME, Gourgari E Emergency management of adrenal insufficiency in children: advocating for treatment options in outpatient and field settings J Investig Med, 2020.PMID 30819831

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Related topics

  • Sepsis and septic shock — the emergency department approach
  • DKA, HHS and hypoglycaemia
  • Upper gastrointestinal bleed
  • Thyroid emergencies — thyroid storm and myxoedema coma
  • Fluid resuscitation in the emergency department
  • Electrolyte emergencies — potassium and sodium
  • Cardiogenic shock in the emergency department