Is the described information about adrenal (Addisonian) crisis—including cortisol deficiency‑induced vasodilation, aldosterone deficiency‑induced sodium loss and hypotension, and physical‑exam findings such as hyperpigmentation, fever, and acute abdomen—accurate?

Verification of Adrenal Crisis Information

The described information about adrenal (Addisonian) crisis is largely accurate, with one important clarification needed regarding hyperpigmentation as an acute crisis finding.

Pathophysiology Assessment

Cortisol Deficiency and Vasodilation

This is correct. Insufficient cortisol production during stress leads to progressive loss of vasomotor tone and impaired alpha-adrenergic receptor responses to noradrenaline 1. The pathophysiology involves volume depletion and vasoplegia resulting in hypotension that progresses to shock if untreated 2. The shock is characteristically resistant to inotropes and fluid resuscitation until parenteral glucocorticoids are administered 2.

Aldosterone Deficiency Effects

This is correct. Severe aldosterone deficiency causes renal sodium loss and fluid depletion 3. Combined glucocorticoid and mineralocorticoid deficiency results in urinary sodium loss, hyponatremia, hyperkalemia, and increased serum urea 4. Patients with insufficient aldosterone production are particularly susceptible to hyponatremia 1.

Physical Examination Findings - Critical Distinction

Hyperpigmentation: A Chronic Finding, Not Acute

This requires clarification. While hyperpigmentation (buccal mucosa, skin creases, palmar creases, frictional surfaces) is indeed a characteristic feature of chronic primary adrenal insufficiency due to ACTH hypersecretion 5, it is NOT a feature of acute adrenal crisis itself. Hyperpigmentation develops over time in patients with established Addison's disease 6, 7.

• If a patient presents in adrenal crisis with hyperpigmentation, this indicates they have underlying chronic primary adrenal insufficiency
• However, adrenal crisis can occur in patients without hyperpigmentation (secondary/tertiary AI, glucocorticoid-induced AI, or acute onset primary AI)

Fever

This is correct. Persistent pyrexia may be due to adrenal insufficiency 1. Fever is listed as a diagnostic criterion for adrenal crisis 2 and is a common presenting feature 5.

Acute Abdomen

This is correct. Abdominal pain, sometimes with peritoneal irritation, is a well-documented symptom of acute adrenal crisis 3. Patients present with nausea, vomiting, and abdominal pain that can mimic an acute surgical abdomen 8, 6.

Complete Clinical Picture of Adrenal Crisis

The diagnosis requires hypotension or hypovolemic shock plus at least one of the following 2:

• Nausea or vomiting
• Severe fatigue
• Fever
• Impaired consciousness (lethargy, confusion, somnolence, collapse, delirium, coma, seizures)

Laboratory Findings

• Hyponatremia (present in 90% of cases) 3
• Hyperkalemia (approximately 50% of cases) 3
• Hypoglycemia (more common in children, rare in adults) 3, 4
• Increased creatinine from prerenal failure 3

Early Warning Signs

Volume-resistant hypotension is a late or even agonal event 1. Earlier signs include 1:

• Non-specific malaise and somnolence
• Cognitive dysfunction
• Orthostatic hypotension (monitor sitting/standing vs. supine blood pressure)

Key Clinical Pitfall

Do not wait for the "classic" presentation. The combination of hyponatremia and hyperkalemia occurs in only about half of patients at diagnosis 3. Plasma sodium is "often, but not always, low" 1. Treatment must never be delayed by diagnostic procedures 3—draw blood for cortisol and ACTH, then immediately administer 100 mg hydrocortisone IV/IM and rapid volume resuscitation with 0.9% saline 3, 2.