Worry About
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N/V and diarrhea leading to dehydration, electrolyte imbalances, and acid/base disorder.
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Acute adrenal insufficiency leading to hypotension and refractory distributive shock.
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Cardiac dysrhythmia caused by hyperkalemia.
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Hypoglycemia and uremia, muscle weakness, decreased level of consciousness.
Overview
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Addison disease is a specific type of adrenal insufficiency due to a primary inadequate production of glucocorticoids, mineralocorticoids, and androgens by the adrenal glands.
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Nonspecific symptoms and insidious disease progression often result in a delay in diagnosis until after the development of addisonian crisis after a significant stressor or illness.
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Pts often present with chronic fatigue as well as GI disturbances; pain, nausea/vomiting, diarrhea, and may develop episodes of mental status changes.
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Diagnosed by cosyntropin stimulation test; administration of cosyntropin will stimulate ACTH secretion by pituitary but will not increase cortisol levels.
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May be associated with other autoimmune conditions
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Drugs that inhibit cortisol biosynthesis will trigger addisonian crisis; etomidate, antifungals.
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See also Adrenal Insufficiency, Acute or Secondary.
Etiology
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80% of cases are due to immune destruction of the adrenal cortex by autoantibodies.
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Most often an antibody against 21-hydroxylase. Presence of these autoantibodies may predate development of clinical disease by decades.
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Other causes include infection (TB, histoplasma, HIV, CMV), cancer metastases, bilateral adrenalectomy, sepsis especially meningococcal, hemorrhage, and infiltrative diseases.