Short answer · Medically reviewed summary · Last updated: 2026-04-06
Addison Disease is primarily diagnosed through a combination of blood tests that measure cortisol and ACTH levels, followed by an ACTH stimulation test to confirm the adrenal glands' inability to produce sufficient hormones. The Diagnostic Process The journey to diagnosing Addison Disease often begins with a physician suspecting primary adrenal insufficiency based on clinical symptoms like skin hyperpigmentation, hypotension, and profound fatigue. Because these symptoms are non-specific, the diagnostic process usually involves: Baseline Morning Blood Tests: Measuring early morning serum cortisol and plasma ACTH levels. ACTH Stimulation Test: The gold standard, where synthetic ACTH is injected to see if the adrenal glands respond by producing cortisol.
14 people with Addison Disease have shared their first-person experience on this question at DiseaseMaps.
How is Addison Disease diagnosed?
How Addison Disease is diagnosed: tests, specialists and the diagnostic journey, told by patients and reviewed against medical sources.
Addison Disease is primarily diagnosed through a combination of blood tests that measure cortisol and ACTH levels, followed by an ACTH stimulation test to confirm the adrenal glands' inability to produce sufficient hormones.
The Diagnostic Process
The journey to diagnosing Addison Disease often begins with a physician suspecting primary adrenal insufficiency based on clinical symptoms like skin hyperpigmentation, hypotension, and profound fatigue. Because these symptoms are non-specific, the diagnostic process usually involves:
- Baseline Morning Blood Tests: Measuring early morning serum cortisol and plasma ACTH levels.
- ACTH Stimulation Test: The gold standard, where synthetic ACTH is injected to see if the adrenal glands respond by producing cortisol. In Addison Disease, the glands fail to respond.
- Imaging: An abdominal CT scan may be used to assess the size and appearance of the adrenal glands, helping to identify causes like autoimmune atrophy, infection, or hemorrhage.
The Diagnostic Odyssey
We recognize that many patients in the Addison Disease community face a frustrating "diagnostic odyssey," sometimes waiting years for an accurate diagnosis because early symptoms are frequently misattributed to depression, chronic fatigue syndrome, or gastrointestinal issues. If your primary care provider is unfamiliar with the nuances of adrenal function, it is essential to seek a referral to an endocrinologist. An endocrinologist is the specialist best equipped to distinguish Addison Disease from secondary adrenal insufficiency or other endocrine disorders that mimic its clinical presentation.
Differential Diagnosis
Clinicians must carefully differentiate Addison Disease from conditions that present similarly, such as salt-wasting nephropathies, severe dehydration, or other causes of hyperpigmentation like hemochromatosis. Early identification is vital to prevent the onset of an adrenal crisis, a life-threatening medical emergency. Please know that your symptoms are real, and your persistence in seeking answers is a vital part of your advocacy for your own health.
Disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD): Addison Disease
- Orphanet: Primary adrenal insufficiency
- The Hormone Health Network (Endocrine Society): Adrenal Insufficiency and Addison's Disease
Posted Mar 11, 2017 by justdeirdre 1051
Posted Mar 12, 2017 by S 2350
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Posted May 30, 2017 by Lucienne 800
ACTH stimulation test. This test involves measuring the level of cortisol in your blood before and after an injection of synthetic ACTH. ACTH signals your adrenal glands to produce cortisol. If your adrenal glands are damaged, the ACTH stimulation test shows that your output of cortisol in response to synthetic ACTH is limited or nonexistent.
Insulin-induced hypoglycemia test. Occasionally, doctors suggest this test if pituitary disease is a possible cause of adrenal insufficiency (secondary adrenal insufficiency). The test involves checking your blood sugar (blood glucose) and cortisol levels at various intervals after an injection of insulin. In healthy people, glucose levels fall and cortisol levels increase.
Imaging tests. Your doctor may have you undergo a computerized tomography (CT) scan of your abdomen to check the size of your adrenal glands and look for other abnormalities that may give insight to the cause of the adrenal insufficiency. Your doctor may also suggest an MRI scan of your pituitary gland if testing indicates you might have secondary adrenal insufficiency.
Posted Sep 12, 2017 by Tina 2050
Posted Feb 16, 2019 by Edward 1400
Cortisol, aldosterone, sodium, potassium, dhea, acth, resonance, tomography.
Posted Jun 24, 2017 by Elineuda 1280
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Posted Oct 18, 2017 by Rimé Siles Moya 500
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Posted Nov 6, 2017 by ana carolina 1000
