Secondary Adrenal Crisis: Presenting Features and Management

Key Clinical Features

• The American College of Physicians recommends that secondary adrenal crisis be suspected in patients presenting with hypotension, severe weakness, nausea/vomiting, abdominal pain, hyponatremia, and altered mental status, but without hyperkalemia or hyperpigmentation 1, 2
• Nausea and vomiting are present in 20-62% of cases, often accompanied by severe abdominal pain, according to the Journal of Internal Medicine 1
• Hypotension and shock are hallmark features, with blood pressure often refractory to fluid resuscitation alone until glucocorticoids are administered, as stated by the Journal of Internal Medicine 1, 2
• Altered mental status, ranging from confusion to loss of consciousness and coma, is not uncommon in severe presentations, according to the Journal of Internal Medicine 1, 2

Laboratory Abnormalities

• Hyponatremia is present in 90% of newly diagnosed cases, making it the most sensitive laboratory marker, as reported by Praxis Medical Insights 2, 3
• Hyperkalemia is absent in secondary adrenal insufficiency because aldosterone secretion remains intact, according to Praxis Medical Insights 2, 3

Distinguishing Features from Primary Adrenal Insufficiency

• No hyperpigmentation is observed because ACTH levels are low or inappropriately normal, as stated by Praxis Medical Insights 2, 3
• No hyperkalemia or significant salt wasting occurs due to preserved mineralocorticoid function, according to Praxis Medical Insights 2, 3

Critical Management Principles

• The American College of Physicians recommends that treatment of suspected acute adrenal crisis should never be delayed for diagnostic procedures if the patient is clinically unstable 1, 2, 3
• Administer 100 mg IV hydrocortisone immediately as a bolus, followed by continuous infusion of 200 mg/24 hours or 50-100 mg IV every 6-8 hours, as stated by the Journal of Internal Medicine and Anaesthesia 1, 4, 6
• Rapid IV administration of 0.9% saline at 1 L/hour is recommended to correct volume depletion and hypotension, according to the Journal of Internal Medicine and Praxis Medical Insights 1, 2

Patient Education and Prevention

• All patients with adrenal insufficiency require education on stress dosing, doubling or tripling the usual dose during illness, fever, or physical stress, as recommended by Praxis Medical Insights 2, 6
• Prescribe emergency injectable hydrocortisone 100 mg IM kit with self-injection training for use during severe vomiting or inability to take oral medications, according to Praxis Medical Insights 2