ADRENAL CRISIS

✓ Medically ReviewedDISEASEID: MDBT0096🚨 TRIAGE: EMERGENCYICD-10: E27.2

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Definition

CLINICAL DEFINITION

Adrenal crisis is acute life-threatening failure of cortisol (main stress hormone) with rapid collapse. It often adds aldosterone loss (salt hormone loss) in primary gland disease. Typical features are hypotension (low blood pressure) unresponsive to fluids, shock (poor organ perfusion) and confusion. It differs from chronic insufficiency (lasting hormone shortfall with fatigue) by sudden decompensation (rapid worsening) needing emergency steroids (replacement hormones).

IN PLAIN ENGLISH

Adrenal crisis is sudden loss of stress hormones. Blood pressure drops and will not stay up. Severe weakness and vomiting are common. Confusion and fainting can follow. It needs emergency fluids and steroids.

COMMON MISCONCEPTION / WHAT IT DOES NOT MEAN

Adrenal crisis is not stable chronic insufficiency (lasting mild shortfall) without shock. It is not simple dehydration (water loss) or sepsis (infection response) alone, though infection can trigger it. It is not Cushing syndrome (excess cortisol with weight gain) or high-pressure adrenal tumour. Diagnosis needs acute cortisol failure with low pressure or shock needing emergency steroids.

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Word Breakdown

adreno-

=near the kidney glands

kris-

=turning point or sudden change

-is

=acute condition

Literal Meaning: sudden turning for worse in glands near the kidneys

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Abbreviations

AC=Adrenal crisis - acute life-threatening cortisol failure with shock

ACTH=Adrenocorticotropic hormone - pituitary signal driving cortisol

IV=Intravenous - into vein, route for fluids and emergency steroids

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Synonyms & Variants

Addisonian crisis›Acute adrenal insufficiency›Acute adrenocortical failure›

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Category-Specific Context

Adrenal crisis is a Disease because it is acute organ failure with defined mechanism and rescue pathway. It is not a Symptom (reported problem) alone. Chronic insufficiency (lasting hormone shortfall) is the background disease while crisis is its life-threatening decompensation (sudden worsening). Care follows an emergency protocol rather than routine replacement alone.

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Clinical Context & Usage

CLINICAL SETTINGS

Emergency DepartmentIntensive Care UnitPerioperative and Surgical WardsEndocrinology Inpatient Service

USAGE & DOCUMENTATION NOTES

Use adrenal crisis for acute decompensation (sudden worsening) with fluid-unresponsive low pressure. Do not use it for stable insufficiency without shock or severe salt upset. Document precipitants (triggers) such as infection, surgery, vomiting or missed steroids. Start hydrocortisone (replacement steroid) with fluids without waiting for cortisol results.

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Primary Causes & Pathophysiology

PATHOPHYSIOLOGY

Cortisol loss impairs vessel tone (tightness) and catecholamine response (adrenaline-like support), causing widening and low pressure. Aldosterone loss causes kidney salt loss with potassium retention (mineral held back), giving low sodium with high potassium. Cortisol loss also cuts sugar making and raises insulin sensitivity (sugar-lowering response), causing low glucose. Volume loss with weak heart output progresses to shock (organ underfilling) when stress raises demand.

PRIMARY CAUSES

Missed or abruptly stopped glucocorticoids in known insufficiency

Removes replacement cortisol during baseline and stress need, allowing vessel collapse with salt loss and shock

Acute infection such as gastroenteritis, pneumonia or sepsis

Raises cortisol demand while fever and vomiting reduce steroid absorption and vessel tone

Surgery, trauma, labour or major physiological stress

Surges cortisol requirement that deficient glands cannot meet, precipitating low pressure and collapse

Primary gland failure from autoimmunity, tuberculosis or bilateral haemorrhage

Destroys cortex so cortisol and aldosterone fall together with sodium loss and potassium retention

Secondary suppression from pituitary disease or chronic steroids with acute stressor

Blunts ACTH-driven surge so stress response fails with low pressure and low glucose even when aldosterone is preserved

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Drug-Induced Causes

💊 Abrupt withdrawal of systemic corticosteroids ↗

Mechanism: Suppresses brain-adrenal axis so own cortisol cannot resume quickly, leaving no stress response

→ Taper slowly when indicated and give stress-dose hydrocortisone with sick-day teaching

💊 Ketoconazole and other steroid synthesis blockers ↗

Mechanism: Blocks cortisol-making enzymes in cortex, lowering cortisol and sometimes aldosterone

→ Stop or replace offending agent and give hydrocortisone with fluids and salt monitoring

💊 Etomidate anaesthetic induction ↗

Mechanism: Inhibits cortisol synthesis for hours and unmasks insufficiency under stress

→ Avoid repeat dosing in at-risk patients and treat suspected crisis empirically with hydrocortisone

💊 Enzyme inducers such as rifampicin and mitotane ↗

Mechanism: Speed cortisol breakdown or destroy cortical cells, reducing available cortisol during illness

→ Raise maintenance steroids during co-treatment and treat crisis with high-dose hydrocortisone and fluids

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Epidemiology

Prevalence:Adrenal crisis is uncommon in the general population. It matters most in known insufficiency where several events per hundred patient-years occur in high-risk cohorts. Risk rises with primary disease, other illnesses and poor sick-day knowledge (extra dosing understanding). True incidence varies by recognition and teaching.

Age Group:Crisis can occur at any age when cortisol lack meets acute stress. Children with salt-wasting enzyme defects and older adults with many medicines face higher vulnerability (greater risk). Adults with Addison disease (autoimmune failure) often present in young to middle adulthood. Stress-dose teaching matters across all ages.

Geographic Distribution:Adrenal crisis occurs worldwide wherever insufficiency exists. No strong geographic clustering is established for crisis itself. Recognition varies with endocrine access, lab testing and emergency steroid supply. Regions with higher tuberculosis burden see more primary disease leading to crisis.

Red Flags & Triage ★

TRIAGE LEVEL

🚨 EMERGENCY

DO NOT MISS — LIFE-THREATENING PRESENTATIONS

Low pressure unresponsive to fluids in known adrenal disease
Low sodium with high potassium and low glucose pattern
Recent missed steroids, infection, vomiting or surgery as trigger

URGENT EVALUATION TRIGGERS

Systolic pressure below 90 with known adrenal disease
Confusion or faint with shock after infection, surgery or vomiting
Low sodium with high potassium and low glucose plus low pressure

Contraindications & Precautions

CONTRAINDICATIONS

There are no absolute contraindications to stress-dose hydrocortisone in suspected crisis
Do not withhold fluids or steroids to await cortisol testing
Do not rely on vasopressors alone without steroids for low pressure

SPECIAL PRECAUTIONS

Monitor glucose, sodium, potassium and fluid balance closely during resuscitation
Watch for fluid overload with breathlessness and swelling in heart or kidney disease
Step steroids down to maintenance after crisis to avoid high sugar and confusion
Provide sick-day guidance with injection training before discharge

Complications

DOWNSTREAM CLINICAL COMPLICATIONS

Refractory hypotension and shock
Acute kidney injury from poor perfusion
Cardiac arrhythmia from high potassium
Hypoglycaemic seizures or coma
Death when treatment is delayed

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Confused With (LASA & DDx) ★

LEXICAL (LASA) — SIMILAR NAMES

Addison disease

Confused because both involve adrenals but Addison disease is chronic insufficiency while crisis is acute life-threatening worsening

Cushing syndrome

Confused as opposite cortisol disorder but Cushing is cortisol excess with weight gain while crisis is cortisol lack with shock

Adrenaline

Confused by similar name but adrenaline is emergency vessel drug while crisis is gland failure needing hydrocortisone with fluids

CLINICAL DIFFERENTIAL DIAGNOSES (DDx)

Septic shock

Key Distinguishing Feature: Fever with infection focus overlaps but lacks classic low sodium with high potassium pair and steroid gap

Hypovolaemic shock from bleeding or dehydration

Key Distinguishing Feature: Low pressure with fast pulse overlaps but history shows blood or fluid loss without salt-hormone pattern

Anaphylaxis

Key Distinguishing Feature: Sudden collapse overlaps but wheeze with hives and swelling points to allergy with fast adrenaline response

Diabetic ketoacidosis

Key Distinguishing Feature: Vomiting with belly pain and confusion overlaps but severe high sugar with ketones dominates

Acute abdomen with surgical emergency

Key Distinguishing Feature: Pain with vomiting and low pressure overlaps but focal tenderness with imaging findings dominates

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Clinical Pearls

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Give hydrocortisone before labs return when crisis is suspected because delay deepens shock and death risk.

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Seek low sodium with high potassium and low glucose plus low pressure as the classic crisis clue.

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Double maintenance steroids early in infection, vomiting or surgery and seek care fast after missed doses.

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Separate crisis with fluid-unresponsive shock from chronic tiredness because crisis needs emergency steroids with fluids.

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Arrange alert identity with emergency injection kit and written sick-day plan before discharge to prevent repeats.

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Example Usage & SOAP

CLINICAL SENTENCE

""34-year-old man with Addison disease and missed steroids developed shock from adrenal crisis.""

IN A SOAP NOTE

S: 42-year-old with Addison disease, vomiting and severe weakness after missing steroids for 2 days. O: Temp 38.2C, BP 82/54, HR 118, RR 22, SpO2 97 percent on air, confused with dry mucosa. A: Adrenal crisis with low pressure and salt upset. P: IV hydrocortisone now, saline resuscitation, dextrose for low sugar, salt rechecks, ICU admission.

DIFFERENTIAL DIAGNOSIS CONTEXT

Low pressure unresponsive to fluids favours adrenal crisis in known adrenal disease. Fever with positive cultures favours sepsis. Wheeze with hives favours anaphylaxis. High sugar with ketones favours ketoacidosis. Check missed steroids and recent stressors to separate crisis from other shock.

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Prognosis

SHORT-TERM OUTCOME

Short term outcome follows speed of hydrocortisone with fluids. Delay risks refractory shock (persistent low perfusion), kidney injury and death. Sodium, potassium and glucose usually correct quickly with therapy. Most improve within a day or two when triggers are treated.

LONG-TERM PROGNOSIS

Long term outlook reflects background insufficiency and recurrence prevention. Teaching on sick-day rules (extra dosing in illness), alert identity and emergency kits helps avoid repeats. Other illnesses and repeated infections raise future risk. Deaths cluster around delayed recognition rather than untreatable disease.

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References & Coding

ICD-10 DIAGNOSTIC CODE

E27.2

LITERATURE CITATIONS & GUIDELINES

[1]WHO ICD-10 E27.2 Addisonian crisis

[2]Endocrine Society adrenal insufficiency guidance

[3]Harrison's Principles of Internal Medicine

MEDICAL DISCLAIMER — This content is intended for educational purposes and qualified healthcare professionals only. Always refer to current clinical diagnostic criteria, institutional protocols, and official guidelines. Medobo is not responsible for clinical decisions made based on this content.