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PubMed This is a summary of 123 peer-reviewed journal articles Updated
Endocrinology

Your Guide to Cushing Disease

At a Glance

Cushing disease is a rare condition caused by a pituitary tumor (PitNET) that forces the body to produce dangerously high levels of cortisol. The primary treatment is transsphenoidal surgery to remove the tumor, followed by a managed recovery period to handle cortisol withdrawal.

If you have just been diagnosed with Cushing disease, or if you suspect you might have it, you have likely been on a long and exhausting medical journey. Cushing disease is a rare condition caused by a small tumor in the pituitary gland (now officially called a PitNET) that triggers your body to produce dangerously high levels of cortisol, the body’s primary stress hormone [1][2].

Because cortisol affects nearly every system in your body, the symptoms can be vast and confusing—from rapid weight gain and muscle weakness to severe brain fog and mood swings [3]. It is common for patients to feel dismissed or misdiagnosed for years before finally finding the true cause of their suffering [4].

This guide is designed to empower you. It translates complex endocrinology and neurosurgery into clear, actionable knowledge so you can partner with your medical team and advocate for the care you deserve.

Navigate Your Journey

Depending on where you are in your medical journey, you can jump directly to the resources that matter most to you right now:

01

Understanding Cushing Disease: Validation & Orientation

Learn what to expect after a Cushing disease diagnosis. Understand the difference from Cushing syndrome, the role of PitNETs, and your path to remission.

02

Biology & The Search for the Source: Disease vs. Syndrome

Learn the difference between Cushing's disease and Cushing's syndrome. Discover how doctors use ACTH tests, MRIs, and BIPSS to find the source of cortisol.

03

Building Your Care Team: Hiring the Right Experts

Learn how to build an expert Cushing disease care team. Find a Pituitary Tumor Center of Excellence, learn what to ask your surgeon, and prepare for your visit.

04

The Post-Op Reality: Navigating the 'Crash' Toward Recovery

Learn what to expect during Cushing disease post-op recovery. Understand the cortisol crash, steroid tapering, withdrawal symptoms, and adrenal insufficiency.

You are no longer searching in the dark. With the right team and the right information, Cushing disease is a highly treatable condition, and you have a clear path forward [5].

Common questions in this guide

What causes Cushing disease?
Cushing disease is caused by a small tumor in the pituitary gland, known as a PitNET. This tumor triggers your body to produce dangerously high levels of cortisol, which is the body's primary stress hormone.
What are the warning signs and symptoms of Cushing disease?
Because high cortisol affects nearly every system in your body, the symptoms can be wide-ranging. The most common warning signs include rapid weight gain, muscle weakness, severe brain fog, and extreme mood swings.
How is Cushing disease treated?
The standard of care for Cushing disease is typically a specialized operation called transsphenoidal surgery. During this procedure, a neurosurgeon removes the tumor from the pituitary gland to stop the excess cortisol production.
What should I expect during recovery from Cushing disease surgery?
Immediately following a successful surgery, your body will experience a significant drop in cortisol levels. This leads to a physically challenging recovery phase known as the 'cortisol crash' or cortisol withdrawal, which requires careful medical monitoring.
What should I ask my doctor if I suspect Cushing disease?
It is important to ask about the most critical next steps in your diagnostic or treatment plan. You should also request copies of all lab reports and MRIs for your own records, and ask if the clinic has a dedicated nurse coordinator for pituitary disorders.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.What is the most important next step in my specific diagnostic or treatment plan?
  2. 2.Can you provide me with copies of all my lab reports and MRI discs so I can keep my own medical binder?
  3. 3.How do we communicate between appointments if my symptoms suddenly worsen?
  4. 4.Is there a dedicated nurse coordinator at this clinic who specializes in pituitary disorders?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (5)
  1. 1

    Cushing Disease: Medical and Surgical Considerations.

    Bray DP, Rindler RS, Dawoud RA, et al.

    Otolaryngologic clinics of North America 2022; (55(2)):315-329 doi:10.1016/j.otc.2021.12.006.

    PMID: 35256173
  2. 2

    Pituitary Neuroendocrine Tumor or Pituitary Adenoma? Let's Ask the Epigenome!

    Dottermusch M

    Endocrine pathology 2025; (36(1)):35 doi:10.1007/s12022-025-09879-8.

    PMID: 41060331
  3. 3

    A commentary on Diagnosing Cushing's disease in the context of renal failure.

    Raff H, Cohen EP, Findling JW

    European journal of endocrinology 2019; (181(4)):C9-C11.

    PMID: 31349218
  4. 4

    Unmet needs in Cushing's syndrome: the patients' perspective.

    Valassi E, Chiodini I, Feelders RA, et al.

    Endocrine connections 2022; (11(7)).

    PMID: 35904235
  5. 5

    Cushing's disease.

    Ferriere A, Tabarin A

    Presse medicale (Paris, France : 1983) 2021; (50(4)):104091 doi:10.1016/j.lpm.2021.104091.

    PMID: 34718112

This guide provides educational information about Cushing disease, its symptoms, and general treatment pathways. It is for informational purposes only and does not replace professional medical advice from your endocrinologist or neurosurgeon.

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