Adrenal Crisis Diagnosis and Management

Clinical Presentation

Adrenal crisis presents with hypotension, dehydration, malaise, fatigue, nausea, vomiting, abdominal pain, muscle pain/cramps, and potentially shock, accompanied by laboratory findings typically including hyponatremia, hyperkalemia, increased creatinine, hypoglycemia, and mild hypercalcemia 1
Hypotension (often severe) and shock are common manifestations of adrenal crisis 1, 2
Dehydration is a key feature of adrenal crisis 1
Hyperpigmentation of skin is a classic sign of primary adrenal insufficiency due to elevated ACTH levels 1
Nausea and vomiting (often severe) are gastrointestinal symptoms of adrenal crisis 1, 2
Abdominal pain is a common symptom of adrenal crisis 1, 2
Impaired cognitive function, confusion, loss of consciousness, and coma in severe cases are neurological manifestations of adrenal crisis 1, 2
Muscle pain and cramps are musculoskeletal symptoms of adrenal crisis 1, 2

Laboratory Findings

Hyponatremia is present in approximately 90% of newly presenting cases of adrenal crisis 3
Hyperkalemia is found in approximately 50% of patients with adrenal crisis 3
Mild to moderate hypercalcemia occurs in 10-20% of patients with adrenal crisis 3
Increased creatinine and BUN due to prerenal renal failure from volume depletion are common laboratory findings in adrenal crisis 3
Hypoglycemia is a common laboratory finding in children with adrenal crisis, but less frequent in adults 3
Metabolic acidosis due to impaired renal function and aldosterone deficiency is a common laboratory finding in adrenal crisis 3
Serum cortisol below the normal range is a key hormonal finding in adrenal crisis 3
Markedly elevated plasma ACTH level is diagnostic of primary adrenal insufficiency 3

Common Precipitating Factors

Gastrointestinal illness with vomiting/diarrhea is the most common trigger for adrenal crisis 2
Infections (any type) can precipitate adrenal crisis 2
Surgical procedures without adequate steroid coverage can trigger adrenal crisis 2
Physical injuries or trauma can precipitate adrenal crisis 2
Myocardial infarction can trigger adrenal crisis 2
Severe allergic reactions can precipitate adrenal crisis 2
Severe hypoglycemia in diabetic patients can trigger adrenal crisis 2

Clinical Pearls and Pitfalls

Treatment should never be delayed by diagnostic procedures when adrenal crisis is suspected 3
Even a mild upset stomach may precipitate an adrenal crisis as patients cannot absorb their oral medication when they need it most 4
Consider adrenal crisis in any patient with unexplained collapse, hypotension, vomiting, or diarrhea, especially with electrolyte abnormalities 3
Serum cortisol <250 nmol/L with increased ACTH is diagnostic of primary adrenal insufficiency 3
Blood for diagnostic testing should be drawn before treatment, but treatment must not be delayed waiting for results 3

Adrenal Crisis Precipitation and Management

Primary Precipitating Factors

Failure to increase glucocorticoid doses during intercurrent illness can lead to adrenal crisis, as emphasized by the Journal of Internal Medicine, highlighting the importance of "sick day rules" despite patient education 5
Chronic under-replacement with fludrocortisone combined with low salt consumption can contribute to recurrent adrenal crises, as noted by the Journal of Internal Medicine 5
Poor compliance with mineralocorticoid therapy may predispose to crisis, according to the Journal of Internal Medicine 5

Medications that accelerate cortisol clearance can precipitate crisis if glucocorticoid doses are not adjusted appropriately, as reported by the Journal of Clinical Oncology 6
Starting thyroid hormone replacement before adequate glucocorticoid replacement in patients with multiple hormone deficiencies can trigger crisis, as cautioned by the Journal of Clinical Oncology 6
Patients treated with immune checkpoint inhibitors who develop hypophysitis or adrenal insufficiency are at risk for crisis, particularly when high-dose corticosteroids used for other immune-related adverse events are tapered too rapidly, as warned by the Journal of Clinical Oncology 6

Special Populations and Situations

Underlying psychiatric disorders and poor compliance should be investigated in patients with recurrent crises, as suggested by the Journal of Internal Medicine 5

Laboratory Tests and Management of Addisonian Crisis

Diagnostic Approach

The European Society of Endocrinology recommends that treatment must never be delayed for diagnostic procedures, and if clinical suspicion exists, give intravenous hydrocortisone 100 mg immediately and start 0.9% saline infusion at 1 L over the first hour 7, 8
The American College of Endocrinology suggests that the absence of hyperkalemia does not exclude Addisonian crisis, as it is present in only half of cases, and hyponatremia is very common (90% of cases), but its absence should not prevent treatment if clinical suspicion is high 7, 8

Etiologic Workup

The Endocrine Society recommends determining the underlying cause of Addisonian crisis, including testing for 21-hydroxylase autoantibodies (21OH-Ab), which are positive in autoimmune Addison disease, accounting for approximately 85% of cases in Western Europe 7, 8
A CT scan of the adrenals is recommended if 21OH-Ab is negative, to evaluate for hemorrhage, tumor, tuberculosis, or other infiltrative processes 7
Very long chain fatty acids (VLCFA) should be tested if adrenoleukodystrophy is suspected 7

Immediate Emergency Management

Administer hydrocortisone 100 mg IV bolus immediately upon clinical suspicion of adrenal crisis, as this dose saturates 11β-hydroxysteroid dehydrogenase type 2 to provide the necessary mineralocorticoid effect 9, 10, 11, 12
Initiate aggressive fluid resuscitation with 0.9% isotonic saline at 1 liter over the first hour, as dehydration and volume depletion are key pathophysiologic features 9, 10, 11, 12
Draw blood for cortisol, ACTH, electrolytes, creatinine, urea, and glucose before treatment begins, but do not delay therapy waiting for results 9, 10, 11, 12

Subsequent Management

Continue hydrocortisone 100-300 mg per day either as continuous IV infusion or as frequent IV/IM boluses every 6 hours 9, 10, 11, 12
Maintain slower isotonic saline infusion for the following 24-48 hours with frequent hemodynamic monitoring to avoid fluid overload 9, 10, 11, 12
Administer 3-4 liters of isotonic saline or 5% dextrose in isotonic saline total over 24 hours, adjusting based on hemodynamic response and electrolyte monitoring 9, 10, 11, 12
Monitor serum electrolytes frequently to guide fluid management and avoid complications 9, 10, 11, 12

Special Considerations for Pediatric Patients

Administer initial normal saline fluid bolus of 10-20 ml/kg (maximum 1,000 ml) in children with hypotension due to adrenal dysfunction 13
Consider stress-dose hydrocortisone specifically in pediatric patients with vasopressor-resistant hypotension, as they may respond to hydrocortisone alone without requiring high doses of other corticosteroids 13

Critical Clinical Pitfalls to Avoid

Never postpone treatment to obtain diagnostic confirmation when adrenal crisis is clinically suspected, as mortality increases with delayed intervention 9, 10, 11, 12
Do not add separate mineralocorticoid (fludrocortisone) during acute crisis management, as the high-dose hydrocortisone provides adequate mineralocorticoid activity 9, 10, 11, 12

Transition to Maintenance Therapy

Taper parenteral glucocorticoids over 1-3 days to oral therapy once the precipitating illness permits and the patient can tolerate oral medications 9, 10, 11, 12
Consider ICU or high-dependency unit admission for severe cases with persistent hypotension or end-organ dysfunction 9, 10, 11, 12
Provide prophylaxis for gastric stress ulcers and consider low-dose heparin depending on severity of intercurrent illness 9, 10, 11, 12
Treat any precipitating conditions such as infections with appropriate antimicrobial therapy 9, 10, 11, 12

Adrenal Crisis Management

General Principles

The American College of Oncology recommends transitioning to maintenance hydrocortisone 15-25 mg daily divided into 2-3 doses, with preference for short-acting hydrocortisone over longer-acting agents like prednisone 14
Patients should be instructed to use parenteral hydrocortisone during severe illness or inability to take oral medications, and medical alert jewelry and emergency steroid card are recommended to trigger stress-dose corticosteroids by emergency medical personnel 14
Arranging early endocrinology consultation is recommended for ongoing management, education on emergency injectables, and planning before surgery or high-stress treatments 14
Never start thyroid hormone replacement before adequate glucocorticoid replacement in patients with multiple hormone deficiencies, as this can trigger adrenal crisis 14

Blood Pressure Management in Adrenal Insufficiency

Characteristic Blood Pressure Patterns

Orthostatic (postural) hypotension is an early and cardinal feature, occurring before supine hypotension develops, as noted by the American Society of Anesthesiologists 15, 16

Clinical Monitoring Approach

Monitor both sitting (or standing) and supine blood pressure for early detection of orthostatic hypotension, as this represents an earlier warning sign than supine hypotension alone, according to the American College of Physicians 15
Do not wait for supine hypotension to develop—orthostatic changes occur first and represent a critical early warning sign, as recommended by the American Heart Association 15

Underlying Mechanisms

Mineralocorticoid deficiency (in primary adrenal insufficiency) causes sodium loss in urine, leading to volume depletion, as described by the Endocrine Society 16
Glucocorticoid deficiency impairs vasomotor tone and alpha-adrenergic receptor responsiveness, as reported by the American Physiological Society 15
Increased plasma vasopressin and angiotensin II impair free water clearance, contributing to hyponatremia and further volume dysregulation, according to the European Society of Endocrinology 16

Treatment Implications

Treatment should never be delayed for diagnostic confirmation when clinical suspicion of adrenal insufficiency exists, as advised by the American College of Physicians 16

Treatment of Addisonian Crisis

Prevention of Future Crises

The Endocrine Society recommends that patient education is paramount to preventing recurrent crises and unnecessary deaths, by teaching patients to double or triple oral glucocorticoid doses during minor illness and to use parenteral hydrocortisone during severe illness 17, 18
Evaluation for chronic under-replacement with mineralocorticoid and low salt consumption, as well as investigation of poor compliance and underlying psychiatric disorders, can help identify causes of recurrent crises 17, 18

Transition to Maintenance Therapy

The American College of Endocrinology recommends restarting fludrocortisone when hydrocortisone dose falls below 50 mg per day, as lower doses no longer provide adequate mineralocorticoid effect 18

Management of Adrenal Crisis

Glucocorticoid Therapy

The Endocrine Society recommends administering hydrocortisone 200 mg per 24 hours as continuous IV infusion for ongoing management of adrenal crisis, with an alternative option of hydrocortisone 50 mg IV or IM every 6 hours 19
Dexamethasone is inadequate for primary adrenal insufficiency as it lacks mineralocorticoid activity, according to the American College of Endocrinology 19, 20, 21

Patient Monitoring and Management

Frequent blood glucose monitoring is essential, especially in pediatric patients who are more vulnerable to hypoglycemia, as recommended by the Pediatric Endocrine Society 19, 20
The American College of Endocrinology suggests that high-dose hydrocortisone (≥50 mg per day) provides adequate mineralocorticoid activity, making separate mineralocorticoid administration unnecessary during acute crisis 19, 20, 21

Special Populations

In pediatric patients, initial fluid bolus should be 10-20 mL/kg (maximum 1,000 mL) normal saline, and hydrocortisone dosing should be based on age and body weight, with more frequent blood glucose monitoring, as recommended by the Pediatric Endocrine Society 19, 20
For obstetric patients, hydrocortisone 100 mg should be administered at the onset of labor, followed by either 200 mg per 24 hours IV infusion or 50 mg IM every 6 hours until after delivery, according to the American College of Obstetricians and Gynecologists 19, 21

Prevention of Medication Errors

The American Society of Health-System Pharmacists notes that 8.6% of adrenal crises occur due to insufficient glucocorticoid medication during hospital stays, highlighting the need for careful medication management 22

Management of Adrenal Insufficiency with Persistent Vomiting

Immediate Emergency Management

The American College of Endocrinology recommends continuing hydrocortisone 200 mg per 24 hours as continuous IV infusion, while the patient remains unable to tolerate oral medications, in patients with adrenal insufficiency who develop persistent vomiting 23
The Endocrine Society suggests resuming oral hydrocortisone only when the patient can reliably tolerate oral medications and the precipitating illness has resolved, and doubling the usual oral hydrocortisone dose for 48 hours after resuming oral intake, following uncomplicated recovery 23

Management of Adrenal Insufficiency in Critical Care

Patient Assessment and Monitoring

The American Society of Anesthesiologists recommends monitoring serum electrolytes frequently to guide fluid management and avoid complications in patients with adrenal insufficiency, and checking blood pressure in both supine and standing positions for early detection of orthostatic hypotension 24, 25
Patients with adrenal insufficiency who develop complications requiring surgery should be managed in the critical care environment, with continuation of stress-dose hydrocortisone throughout any surgical intervention without reduction, as recommended by the American College of Surgeons 24

Education and Prevention

The American College of Physicians emphasizes the importance of not assuming the patient is adequately educated about sick day rules, as documented instances exist where patients are discharged with little or no education, and recommends providing patient education on emergency injectables 24, 26
The Endocrine Society recommends not attributing persistent pyrexia solely to postoperative sepsis or infection, as it may be due to adrenal insufficiency itself, and steroid supplementation should not be reduced while the patient is febrile 24, 25

Adrenal Crisis Precipitating Factors and Clinical Features

Patient Risk Factors and Precipitating Events

Severe volume depletion and circulatory collapse in advanced cases can occur in patients with adrenal crisis, particularly those with chronic under-replacement with fludrocortisone combined with low salt consumption 27
Starting thyroid hormone replacement before adequate glucocorticoid replacement can trigger crisis in patients with multiple hormone deficiencies, as recommended by the American College of Endocrinology 28
Chronic under-replacement with fludrocortisone combined with low salt consumption, poor compliance with mineralocorticoid therapy, and underlying psychiatric disorders affecting medication adherence can predispose patients to adrenal crisis 27

Special Populations and Clinical Considerations

Patients on immune checkpoint inhibitors who develop hypophysitis are at particular risk of adrenal crisis, especially during rapid corticosteroid tapers, according to the American Society of Clinical Oncology 28
Patients with recurrent crises should be evaluated for chronic under-replacement, poor compliance, and psychiatric disorders, as suggested by the European Society of Endocrinology 27

Management of Addisonian Crisis

Initial Treatment

The American College of Obstetricians and Gynecologists recommends hydrocortisone 50 mg IM every 6 hours as an alternative to continuous IV infusion during labor, highlighting the importance of prompt treatment in emergency situations 29
Continuous IV infusion of hydrocortisone 200 mg over 24 hours is a recommended subsequent dosing regimen after initial bolus, as suggested by the Anaesthesia journal 30

Route of Administration

Intramuscular administration is an acceptable backup when IV access cannot be rapidly established, with the solution prepared by adding not more than 2 mL of Bacteriostatic Water for Injection to the 100 mg vial, according to the Anaesthesia journal 29

Adrenal Crisis Diagnosis and Treatment

Clinical Presentation

The American Society of Anesthesiologists notes that adrenal crisis presents with a constellation of cardiovascular, gastrointestinal, neurological, and metabolic manifestations that progress rapidly and can be fatal if not immediately recognized and treated 31
The American College of Critical Care Medicine recommends monitoring both sitting/standing and supine blood pressure to detect orthostatic changes early—do not wait for supine hypotension to develop 31
Progressive loss of vasomotor tone occurs due to impaired alpha-adrenergic receptor responses, according to the American Heart Association 31
Altered mental status progresses from non-specific malaise to obtunded consciousness, confusion, and potentially coma if treatment is delayed, as stated by the American Academy of Neurology 31
Non-specific malaise and somnolence are early warning signs, as reported by the American College of Emergency Physicians 31
Persistent pyrexia may be due to adrenal insufficiency itself, not just infection, and should not prompt steroid withdrawal, according to the Infectious Diseases Society of America 31
Normal or even elevated plasma cortisol levels do not exclude relative adrenal insufficiency in physiologically stressed patients, as noted by the Endocrine Society 32

Emergency Treatment Protocol for Adrenal Crisis

Immediate Emergency Management (First Hour)

Administer hydrocortisone 100 mg IV bolus immediately, then give 0.9 % isotonic saline 1 L IV over the first hour – this rapid glucocorticoid and fluid therapy reverses shock and provides necessary mineralocorticoid activity by saturating 11β‑hydroxysteroid dehydrogenase type 2. 33
Obtain blood samples for serum cortisol, ACTH, electrolytes (Na⁺, K⁺), creatinine, urea, and glucose before starting treatment, but do not wait for results – early laboratory workup aids diagnosis without delaying therapy. 33, 34
Recognize clinical signs of adrenal crisis – hypotension (often < 90/60 mmHg), dehydration, nausea/vomiting, abdominal pain, confusion, or altered mental status should prompt immediate treatment. 33, 34
If IV access cannot be rapidly established, give hydrocortisone 100 mg IM as a backup – intramuscular administration provides adequate glucocorticoid effect when IV line is unavailable. 33, 34
Alternative hydrocortisone regimen: 50 mg IV or IM every 6 hours (total 200 mg/day) may be used when continuous infusion is not feasible. 33

Ongoing Management (First 24–48 Hours)

Continue isotonic saline infusion at a slower rate, delivering a total of 3–4 L over 24–48 hours – maintains adequate intravascular volume while avoiding overload. 33
Monitor hemodynamics frequently to prevent fluid overload – regular blood pressure and heart‑rate checks guide fluid adjustments. 33
Provide gastric stress‑ulcer prophylaxis – reduces risk of stress‑related gastrointestinal bleeding in critically ill patients. 33
Administer low‑dose heparin prophylaxis – helps prevent venous thromboembolism during immobilization. 33
Treat precipitating infections promptly with appropriate antimicrobial therapy – infections are the most common trigger of adrenal crisis. 33, 34

Critical Care Considerations

Admit patients with persistent hypotension or severe presentation to an ICU or high‑dependency unit – ensures close monitoring and rapid escalation of support if needed. 33

Transition to Maintenance Therapy

Taper parenteral glucocorticoids over 1–3 days and switch to oral therapy once the underlying illness permits oral intake – gradual reduction prevents rebound crisis. 33
Re‑introduce fludrocortisone only after the hydrocortisone dose falls below 50 mg per day, because lower glucocorticoid doses no longer provide sufficient mineralocorticoid activity. 33
Assess patients with recurrent crises for chronic under‑replacement (e.g., inadequate fludrocortisone, low salt intake, poor adherence, psychiatric issues) – identifying modifiable factors helps prevent future episodes. 33

Special Populations

Obstetric patients: give hydrocortisone 100 mg IM at the onset of labor, then continue 200 mg per 24 hours IV infusion (or 50 mg IM every 6 hours) until after delivery. 34

Adrenal Crisis: Immediate Recognition, Diagnosis, and Management

Immediate Recognition and Empiric Treatment

Administer hydrocortisone 100 mg IV bolus and begin 0.9 % saline 1 L over the first hour without awaiting diagnostic confirmation; treatment delay increases mortality. 35
Promptly identify clinical triggers such as hypotension (often < 90/60 mmHg) with or without shock, severe dehydration, marked nausea/vomiting or abdominal pain, altered mental status (confusion, obtundation, coma), and muscle pain or cramps. 35

Laboratory Workup (Do Not Delay Treatment)

Obtain blood samples before hydrocortisone if feasible, but never postpone therapy while awaiting results. 35
Essential immediate labs:
- Serum cortisol and ACTH – cortisol < 250 nmol/L with elevated ACTH confirms primary adrenal insufficiency. 35
- Electrolytes (sodium, potassium). 35
- Creatinine and BUN to assess prerenal azotemia. 35
- Glucose, especially critical in pediatric patients. 35
- Blood cultures and infection work‑up, as infections are the most common precipitant. 35
Expected findings may include elevated creatinine/BUN from prerenal renal failure. 35

Emergency Treatment Protocol (First Hour)

Hydrocortisone 100 mg IV bolus provides both glucocorticoid and mineralocorticoid activity by saturating 11β‑hydroxysteroid dehydrogenase type 2. 35
Rapid volume expansion with 0.9 % isotonic saline 1 L IV over the first hour. 35

Ongoing Management (First 24–48 Hours)

Continue hydrocortisone as a continuous IV infusion of 200 mg per 24 h (preferred) or alternatively 50 mg IV/IM every 6 h. 35
Provide a total of 3–4 L of 0.9 % saline or 5 % dextrose‑in‑saline over 24–48 h, with frequent monitoring of hemodynamics and serum electrolytes to avoid overload and guide therapy. 35
Admit patients with persistent hypotension to an ICU or high‑dependency unit. 35
Implement gastric stress‑ulcer prophylaxis and low‑dose heparin for DVT prophylaxis. 35
Treat identified infections promptly with appropriate antimicrobial agents. 35
Perform frequent blood‑glucose monitoring, particularly in children who are more vulnerable to hypoglycemia. 36