Primary Adrenal Insufficiency / Crisis
Clinical Presentation:
- symptoms depend on the rate of decline of function and superimposed illness
- must have a high suspicion as the presentation can be non-specific including nausea, vomiting, fatigue, weakness, fever and confusion
- more specific aspects of the presentation include a history of weight loss, hyperpigmentation (scars, bucal mucosa), less commonly hypoglycemia
other autoimmune diseases may be present
Underlying Etiology of Primary Adrenal Insufficiency
- Autoimmune (Addison’s or autoimmune polyglandular dz especially type II “Schmidts syndrome”)
- Infection: TB, HIV, fungal, CMV
- Cancer/metasteses
- Hemorrhage – Waterhouse-Friedrichsen (GC) or anticoagulants
- Infarct – APLA
- Drugs: ketoconazole, mitotane
- Adrenomyeloneuropathy – X-linked
On Exam:
Laboratory Features
- CBC (eosinophilia, lymphocytosis)
- Lytes: hyponatremia from decreased aldosterone (primary) or cortisol/increased ADH (secondary), hyperkalemia, hypercalcemia
- Glucose: hypoglycaemia – more common in secondary due to glucocorticoid deficiency
- Non-anion gap metabolic acidosis
Diagnosis
- Should be made with serum measurements of renin, ACTH and cortisol at baseline
diagnosis is confirmed by a cosyntropin (ACTH) stimulation test.
Treatment
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