Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Adrenal Crisis

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In one line

·Cortisol helps blood vessels squeeze when you are stressed, tells your liver to make sugar for energy, and keeps your body balanced during illness or injury.

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Normal physiology

·The hypothalamic-pituitary-adrenal axis (a control loop linking three glands: one in your brain, one below your brain, and two on top of your kidneys) releases cortisol when your body faces stress. Cortisol allows blood vessels to respond to adrenaline and noradrenaline (the fight-or-flight hormones), tells the liver to make new sugar from protein and other building blocks, stops too much swelling and immune activity, and keeps salt and potassium in balance. Every clinical finding in adrenal crisis is a direct result of losing cortisol's jobs.

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What goes wrong

·One upstream hormone failure explains all the downstream problems together.

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Hallmark signs

·Blood pressure that stays dangerously low (systolic below 90 mmHg) even after fluids and medicines to raise blood pressure
·Blood sugar dangerously low (often below 50 mg/dL)
·Sodium too low in the blood (below 135 mEq/L, often below 130 mEq/L)
·Potassium too high in the blood (above 5.0 mEq/L, sometimes above 6.0 mEq/L)
·Extreme tiredness, muscle weakness, and confused thinking or reduced alertness
·Nausea, vomiting, and severe belly pain (sometimes mistaken for a surgical emergency like appendicitis)
·Darkening of the skin, especially in sun-exposed areas, skin creases, knuckles, and inside the mouth (seen in chronic primary adrenal insufficiency, not during the acute crisis itself)
·Recent history of taking steroid pills (prednisone, dexamethasone) that were stopped suddenly or missed, or history of autoimmune disease, tuberculosis, or cancer

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Red flags · escalate now

·Blood pressure below 90 mmHg (top number) that does not come up after 1–2 liters of IV fluid and blood-pressure medicines
·Confusion, extreme sleepiness, or unconsciousness, especially with blood sugar below 50 mg/dL
·Potassium above 6.0 mEq/L with EKG changes (tall pointy T waves, wide QRS), which can trigger a deadly heart rhythm
·Severe belly pain that looks like a surgical emergency (appendicitis, bowel obstruction), delaying the correct diagnosis
·Recent sudden stop of long-term steroid pills (prednisone, dexamethasone) in a patient now in shock

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Workup

·Serum cortisol (random blood draw) and ACTH level, drawn before giving any steroid medicine—but only if the patient is stable enough to wait; never delay treatment if the patient is crashing
·Basic metabolic panel (chemistry panel that checks sodium, potassium, glucose, creatinine, and bicarbonate in the blood)
·Complete blood count with differential (CBC with diff—counts red cells, white cells, and the different types of white cells)
·Blood cultures (bottles of blood sent to the lab to grow bacteria), urine test and culture, chest X-ray, or other tests to find infection—depending on what the exam and history suggest
·Serum lactate level (measures lactic acid in the blood)
·Electrocardiogram (ECG or EKG—the heart tracing) if potassium is elevated

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Treatment

·Intravenous hydrocortisone 100 mg bolus (large dose all at once) immediately, then 50 mg every 6 hours (or 200 mg per day as a continuous drip)
·Rapid intravenous infusion of 0.9 percent normal saline (isotonic salt water) 1 to 2 liters over the first hour, then 250 to 500 mL per hour after that. Add 5 percent dextrose (sugar water) if blood glucose is under 70 mg/dL.
·Find and treat the trigger (the precipitating stressor): start broad-spectrum antibiotics (antibiotics that kill many types of bacteria) right away if infection is suspected; clean out infected wounds (debridement); drain pockets of pus (abscesses); manage heart attack or blood clot in the lung; or restart steroid medicine if doses were missed
·Correct severe high potassium (hyperkalemia) (potassium over 6.5 mEq/L or any level with dangerous EKG changes): give intravenous calcium gluconate 1 gram over 2 to 3 minutes to protect the heart, then insulin (10 units regular insulin IV) with dextrose (25 grams, or one ampule of D50) to shift potassium into cells, and consider sodium bicarbonate (50 mEq IV) if the patient is acidotic
·Oral fludrocortisone acetate 0.1 mg once daily—only for primary adrenal insufficiency, started after the acute crisis is over and the patient can swallow pills
·Perform diagnostic tests to find the cause: measure ACTH, check for adrenal antibodies (21-hydroxylase antibodies, which attack the adrenal glands in autoimmune disease), get a CT or MRI scan of the adrenal glands to look for bleeding, infection, or cancer spread (metastases), and review all medications to see if the patient was on chronic steroids
·Teach the patient how to handle stress doses of steroids at home: give an emergency injection kit with hydrocortisone or dexamethasone for intramuscular self-injection if vomiting or severely ill; provide a medical alert bracelet or wallet card that says 'adrenal insufficiency'; teach the patient to double or triple the daily steroid dose during fever or illness; and explain when to go to the emergency room immediately

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NCLEX trap

·In adrenal crisis (life-threatening state when the body has almost no cortisol), you must give IV hydrocortisone 100 mg immediately—not later. Blood pressure will not rise without cortisol because blood vessels need cortisol to respond to stress signals. IV fluids help expand blood volume, but hydrocortisone is the definitive treatment. Do not wait for test results—delaying treatment increases death rate. This is per Endocrine Society 2016 guidelines: treat first, test later.
·Low sodium and high potassium together, plus low blood pressure (hypotension) (blood pressure too low to feed organs) and belly pain, mean adrenal crisis. The adrenal gland controls sodium and potassium balance through cortisol and aldosterone (hormone that tells kidneys to hold sodium and release potassium). This is not a kidney problem—it is a hormone emergency needing immediate hydrocortisone. The pattern of low sodium (hyponatremia) plus high potassium (hyperkalemia) plus shock is classic for adrenal crisis.
·Always ask: Have you taken oral or inhaled corticosteroids for weeks to months? Did you stop suddenly or miss doses during illness? Secondary adrenal crisis (caused when the pituitary gland stops signaling the adrenal gland after long-term steroid use) from abrupt steroid withdrawal is just as life-threatening as primary adrenal insufficiency. Both need the same urgent hydrocortisone treatment, but the history reveals the cause and guides long-term care.
·Hyperpigmentation on palmar creases (lines in the hand), knuckles, elbows, and inside the mouth in the setting of low blood pressure (hypotension) and high potassium (hyperkalemia) means the adrenal gland has failed and ACTH (adrenocorticotropic hormone, the pituitary signal to make cortisol) is sky-high because the pituitary is trying to wake up a broken adrenal gland. This is primary adrenal insufficiency (Addison disease) in acute crisis. It needs immediate IV hydrocortisone and IV normal saline.
·In adrenal crisis, you cannot treat one problem alone. Low blood sugar (Hypoglycemia), low blood pressure (hypotension), and electrolyte chaos (sodium and potassium out of balance) all come from cortisol deficiency. Give IV hydrocortisone, IV normal saline with dextrose, and fast fluid resuscitation (rapid IV fluid to restore blood volume) together. Each fixes a different life-threatening piece of cortisol loss.
·Always tell the difference: Is this adrenal crisis or septic shock (shock caused by infection releasing toxins that widen blood vessels)? Septic shock needs broad-spectrum antibiotics within one hour per 2021 Surviving Sepsis Campaign guidelines. Adrenal crisis needs immediate hydrocortisone. Both cause low blood pressure (hypotension), but the upstream cause differs. Ask about corticosteroid history and autoimmune disease. If you see low sodium (hyponatremia) with low blood pressure and no infection source, suspect adrenal crisis first.

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