Nursing care
Addison Disease nursing care: what to assess and what to do first
Written and reviewed by Dana Whitfield, RN, MSN · 5 min read · Updated September 2026
Short answer
Addison disease nursing care focuses on recognising cortisol deficiency early and preventing adrenal crisis, which can be triggered by any physical or emotional stressor including infection, surgery, or a missed medication dose. Watch for hyperpigmentation, hyponatraemia and hyperkalaemia, and treat any acute illness in these patients as a potential emergency.
What it is and why it happens
Addison disease is primary adrenal insufficiency: the adrenal cortex fails to produce enough cortisol and, in most cases, aldosterone as well. Autoimmune destruction of the adrenal glands is the most common cause in developed settings, though tuberculosis, adrenal haemorrhage and metastatic disease also destroy adrenal tissue. Because both glucocorticoid and mineralocorticoid production fall, the resulting electrolyte and metabolic disturbances are more pronounced than in adrenal insufficiency caused by pituitary failure.
The critical concept to carry into every patient encounter is that cortisol is the body's stress hormone. A person with a healthy adrenal axis can multiply their cortisol output several-fold during illness, surgery or trauma. A patient with Addison disease cannot make that surge, which is why any stressor, not just a major one, can tip a stable patient into a life-threatening adrenal crisis within hours.
How it presents — what you will actually see
Chronic presentation is often subtle and easy to dismiss: fatigue, weight loss, anorexia, salt craving and postural dizziness build slowly over months. The finding that should make you think of Addison disease specifically is hyperpigmentation, a bronzing of the skin most visible in sun-exposed areas, scars, and skin creases of the palms. It occurs because low cortisol triggers a compensatory rise in ACTH, and the ACTH precursor molecule also stimulates melanocytes.
Laboratory findings reinforce the clinical picture: hyponatraemia and hyperkalaemia together, reflecting the loss of aldosterone's sodium-retaining, potassium-excreting effect. Hypotension, particularly orthostatic hypotension, is common and often the first vital sign abnormality a nurse catches on standing. In acute adrenal crisis, this picture escalates rapidly into severe hypotension, shock, vomiting and altered mental status.
Nursing assessment priorities
Orthostatic vital signs belong on the assessment for every patient with known or suspected Addison disease, since postural blood pressure drops are often the earliest measurable sign of volume depletion. Daily weights and strict intake and output tracking help you catch the fluid losses that accompany sodium wasting before they become severe.
Ask specifically about stressors since the last visit: a cold, a dental procedure, a missed dose, an argument at home. Any of these can be the precipitant of a crisis, and patients often do not connect a mundane illness to their adrenal condition. Assess skin for hyperpigmentation at baseline so you have something to compare against later, and review the medication list for the exact glucocorticoid and mineralocorticoid doses the patient is prescribed, since replacement therapy must be exact and consistent.
Interventions and what to do first
If a patient with known Addison disease presents acutely unwell, hydrocortisone replacement is not something to wait on pending full workup. IV hydrocortisone and aggressive isotonic fluid resuscitation are first-line in suspected crisis, given before confirmatory labs return if the clinical picture is convincing, because delay is what turns a treatable crisis into a fatal one.
For stable patients, timing of oral steroid doses matters: give the larger dose in the morning and the smaller dose in the afternoon to mimic the body's natural cortisol rhythm, and never let a dose be skipped or delayed without a plan. Monitor glucose, since cortisol deficiency predisposes to hypoglycaemia, and monitor potassium and sodium trends with each metabolic panel. During any period of physical stress, illness or planned procedure, anticipate that the prescriber will order a temporary increase in steroid dose, sometimes called stress dosing, and advocate for it if it has not been addressed.
Complications to watch for
Adrenal crisis is the complication that defines nursing vigilance in this population. Severe hypotension unresponsive to fluids alone, profound weakness, abdominal pain, vomiting and confusion signal a crisis in progress and require immediate IV hydrocortisone and fluid resuscitation rather than a wait-and-see approach.
Hyperkalaemia from aldosterone deficiency can produce dangerous dysrhythmias, so watch the cardiac monitor for peaked T waves and widening QRS complexes in an unwell patient. Hyponatraemia severe enough to cause seizures is another real risk during an evolving crisis. Because the presentation can mimic sepsis, gastroenteritis or a cardiac event, a known diagnosis of Addison disease should always raise the index of suspicion for adrenal crisis first when a patient deteriorates without an obvious cause.
Patient teaching before discharge
Every patient with Addison disease needs to leave with a clear, rehearsed plan for sick days: doubling or tripling the oral steroid dose during minor illness, and seeking emergency care for vomiting, inability to keep medication down, or any major stressor. Teach them to never stop their steroid medication abruptly under any circumstance, even if they feel well.
Make sure every patient carries or wears medical alert identification stating their diagnosis and steroid dependence, since this single detail can guide emergency treatment when the patient cannot speak for themselves. Many patients benefit from an emergency injectable hydrocortisone kit at home for situations where oral medication is not possible, and family members should know how to administer it. Reinforce that regular follow-up and never missing a dose, even for a single day, is what keeps this a manageable chronic condition rather than a recurrent emergency.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our endocrine practice questions are the closest set to what this page covers.
Common questions
What triggers an Addisonian crisis?
Any physical or emotional stressor can trigger it, because a patient with Addison disease cannot mount the normal cortisol surge the body needs to cope with stress. Common triggers include infection, surgery, trauma, a missed steroid dose, or even significant psychological stress.
Why does Addison disease cause skin darkening?
Low cortisol triggers the pituitary to release more ACTH in an attempt to stimulate the adrenal glands. The ACTH precursor molecule also stimulates melanocytes, producing the bronzed hyperpigmentation most visible in sun-exposed skin, scars and skin creases.
What electrolyte pattern should raise suspicion for Addison disease?
Hyponatraemia together with hyperkalaemia is the classic pattern, caused by loss of aldosterone's effect on the kidneys. This combination, especially alongside hypotension and fatigue, should prompt consideration of adrenal insufficiency.
What is the priority nursing action in suspected adrenal crisis?
Administer IV hydrocortisone and start aggressive isotonic fluid resuscitation without waiting for confirmatory lab results if the clinical picture is convincing. Delaying treatment for adrenal crisis can be fatal, so treatment takes priority over diagnostic certainty.
How is Addison disease different from Cushing syndrome?
Addison disease is caused by too little cortisol, producing hyperpigmentation, hyponatraemia, hyperkalaemia and hypotension. Cushing syndrome is caused by too much cortisol, producing moon face, hyperglycaemia and hypokalaemia, essentially the opposite electrolyte and clinical picture.