Adrenal and Pituitary Conditions We Evaluate
Common reasons people are referred to an endocrinologist include:
- Adrenal insufficiency, including Addison's disease: the adrenal glands don't make enough cortisol, and sometimes aldosterone
- Cushing's syndrome: too much cortisol, most often from long-term, high-dose glucocorticoid medicines, or from a pituitary or adrenal tumor
- Primary aldosteronism: excess aldosterone that raises blood pressure and can lower potassium
- Pheochromocytoma and paraganglioma: rare tumors that release adrenaline-like hormones
- Adrenal incidentalomas: adrenal nodules found by chance on a CT or MRI scan done for another reason
- Pituitary tumors, including prolactinomas, growth hormone-producing tumors (acromegaly), and non-functioning tumors
- Hypopituitarism and arginine vasopressin deficiency (formerly called central diabetes insipidus)
Symptoms That Can Point to an Adrenal or Pituitary Problem
Symptoms depend on which hormone is affected, and they often overlap with more common conditions:
- Low cortisol: fatigue, muscle weakness, loss of appetite, weight loss, abdominal pain, dizziness on standing, and salt craving
- High cortisol: weight gain around the trunk, a round face, thin arms and legs, easy bruising, wide purple stretch marks, and muscle weakness, often with high blood pressure or blood sugar
- Excess aldosterone: often no symptoms other than high blood pressure, which may be hard to control
- Pheochromocytoma: episodes of headache, sweating, and a pounding heartbeat
- Pituitary tumors: headaches, loss of side (peripheral) vision, milky nipple discharge, irregular or absent periods that can resemble PCOS, low sex drive, or enlarged hands and feet in acromegaly
- Vasopressin deficiency: extreme thirst and large amounts of dilute urine
Testing for Adrenal and Pituitary Disorders
Accurate diagnosis depends on choosing the right test and timing it correctly. Adrenal insufficiency is evaluated with early-morning cortisol and ACTH levels and often an ACTH (cosyntropin) stimulation test. For Cushing's syndrome, the NIDDK describes three main tests: a late-night saliva cortisol test, a 24-hour urine cortisol test, and an overnight dexamethasone suppression test.
Primary aldosteronism is screened with aldosterone, renin, and potassium levels, and the Endocrine Society's 2025 guideline suggests this screening for everyone diagnosed with high blood pressure. Pheochromocytoma is tested with plasma or urine metanephrines. Pituitary evaluation may include prolactin, IGF-1, and other hormone levels, a pituitary MRI, and visual field testing. Because steroids, estrogen, and some blood pressure medicines can affect results, bring a complete medication list to your visit.
Adrenal and Pituitary Treatment Options
Many adrenal and pituitary conditions are very treatable, and options depend on the cause:
- Adrenal insufficiency: lifelong hormone replacement, usually hydrocortisone, plus fludrocortisone for Addison's disease, with extra "stress doses" during illness or surgery
- Cushing's syndrome: carefully tapering glucocorticoid medicines when they're the cause, or surgery to remove a pituitary or adrenal tumor; medicines and radiation are options when surgery isn't possible or doesn't fully work
- Primary aldosteronism: when one adrenal gland is responsible, often confirmed with adrenal vein sampling, surgery may be an option; otherwise, medicines such as spironolactone or eplerenone block aldosterone's effects
- Prolactinomas: usually treated first with medicine, such as cabergoline or bromocriptine
- Other pituitary tumors: surgery by an experienced pituitary surgeon, sometimes followed by medicine or radiation, plus replacement of any hormones the pituitary no longer makes
Adrenal Crisis and Steroid Safety
Adrenal crisis is a life-threatening emergency that can occur when cortisol is severely lacking, especially during illness, injury, or surgery. According to the NIDDK, it can cause dangerously low blood pressure, low blood glucose, low sodium, and high potassium. Warning signs include severe weakness, vomiting, abdominal pain, confusion, or fainting. If you have adrenal insufficiency, use your emergency injection and call 911.
Never stop long-term glucocorticoids such as prednisone suddenly. After extended use, the body's own cortisol production may be suppressed, and stopping abruptly can cause adrenal insufficiency. Always taper under medical guidance.
How Your Endocrinologist at TopInspired.com Coordinates Complex Care
Adrenal and pituitary care often involves several steps. Your endocrinologist plans testing in the right order, including any medication adjustments and early-morning or dynamic tests, then interprets results in the context of your symptoms and imaging.
When surgery, radiation, or specialized imaging is needed, we coordinate with neurosurgeons, endocrine surgeons, radiologists, and eye specialists, and keep your primary care doctor informed. We also provide written sick-day plans for people on steroid replacement. Follow-up lab reviews can often be virtual, while dynamic testing is done in person. Request a consultation to discuss your results.
Living Well With an Adrenal or Pituitary Condition
- Wear a medical ID and carry an emergency steroid card or letter if you take cortisol replacement
- Tell every clinician, including dentists and surgeons, about your condition before any procedure
- Keep regular lab and imaging follow-ups, even when you feel well
- Ask about bone health, since excess cortisol and long-term steroids can lead to osteoporosis
- Monitor glucose, blood pressure, and weight, because Cushing's syndrome and acromegaly raise the risk of high blood sugar and diabetes
When to see a TopInspired endocrinologist
- Your blood pressure is hard to control, started at a young age, or comes with low potassium
- An adrenal nodule was found by chance on a CT or MRI scan
- You have a pituitary tumor or an abnormal pituitary MRI
- You have unexplained fatigue, weight loss, dizziness, or salt cravings that suggest low cortisol
- You've had rapid weight gain with easy bruising, purple stretch marks, and muscle weakness
- You have milky nipple discharge, missed periods, or low libido with a high prolactin level
- You've taken steroids long term and need a safe plan to taper or stop
Adrenal & Pituitary Disorders: frequently asked questions
What is the difference between Cushing's syndrome and Cushing's disease?
Cushing's syndrome is the general term for having too much cortisol, whatever the cause, including glucocorticoid medicines. Cushing's disease is one specific cause: a pituitary tumor that makes too much ACTH, which signals the adrenal glands to overproduce cortisol. According to the NIDDK, these pituitary tumors cause about 8 out of 10 cases not due to medication.
Should everyone with high blood pressure be tested for primary aldosteronism?
The Endocrine Society's 2025 guideline suggests that everyone diagnosed with high blood pressure have aldosterone, renin, and potassium levels checked. Primary aldosteronism is common, often missed, and raises the risk of heart and kidney problems, yet targeted treatment is available. Ask your clinician whether screening makes sense for you, especially if your blood pressure is hard to control.
Are pituitary tumors cancerous?
Almost all pituitary tumors are benign adenomas, not cancer. They are fairly common, and many never cause problems. Some, however, produce excess hormones or grow large enough to press on nearby nerves and affect vision. An endocrinologist can determine whether a tumor is hormonally active and whether it needs treatment or simply monitoring.
Is adrenal fatigue a real diagnosis?
"Adrenal fatigue" is not a recognized medical diagnosis, and endocrine experts caution against it. Persistent fatigue deserves a proper evaluation, because it can reflect true adrenal insufficiency, thyroid disease, anemia, sleep problems, depression, or other conditions. Unregulated "adrenal support" supplements can contain hormones and may cause harm, so talk to your clinician before taking them.
What happens if I stop taking prednisone suddenly?
If you have taken prednisone or another glucocorticoid for more than a few weeks, your adrenal glands may have reduced their own cortisol production. Stopping suddenly can lead to adrenal insufficiency, with fatigue, nausea, dizziness, or, in severe cases, adrenal crisis. Always follow a tapering plan from your clinician, who may check your cortisol levels along the way.
Sources & further reading
- Endocrine Society: Primary Aldosteronism Guideline (2025)
- NIDDK: Cushing's Syndrome
- NIDDK: Adrenal Insufficiency & Addison's Disease
- NIDDK: Prolactinoma
- MedlinePlus: Pituitary Tumors
Last reviewed September 19, 2026. This page is educational and is not a substitute for personal medical advice — see our medical disclaimer.
