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Living with Pituitary dependent hypercortisolism

A hormone condition, also called Cushing disease, where a pituitary tumor causes the body to make too much cortisol.

Understanding Pituitary dependent hypercortisolism

Pituitary dependent hypercortisolism, also called Cushing disease, is a condition in which a pituitary tumor leads to too much of the hormone cortisol.

A noncancerous pituitary tumor (adenoma) or pituitary overgrowth causes the adrenal glands to make large amounts of cortisol. Signs can include weight gain around the trunk and face, stretch marks, easy bruising, a hump on the upper back, muscle weakness and tiredness. Thin bones, mood and memory problems, infections, high blood pressure and diabetes can also occur. Women may have irregular periods and extra body hair.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Weight gain around the belly and face
  • Easy bruising
  • Fatty hump on the upper back (buffalo hump)
  • Muscle weakness in the arms and legs
  • Mood swings and behavior changes
  • Excess body hair (hirsutism) and missed periods

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include cancer specialists, genetic specialists and hormone specialists.

  3. Consider genetic testing

    Changes in USP8 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Raymond A. Wood Foundation, Cushing's Support and Research Foundation and Resolve: The National Infertility Association may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Expert lists: Raymond A. Wood Foundation, Cushing's Support and Research Foundation, Resolve: The National Infertility Association
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Raymond A. Wood Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What tests confirm a pituitary tumor is causing my high cortisol?
Is genetic testing, such as for AIP or MEN1, useful for me or my family?
How will we check bone health, blood pressure and blood sugar?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant, Autosomal Recessive
GenesUSP8

Most cases happen by chance. Some are linked to changes in the AIP and GNAS genes that occur in the tumor itself. Rarely it is inherited, alone or as part of a syndrome such as MEN1.

GeneticEndocrine

Also known as: acth producing pituitary adenoma; corticotroph pituitary adenoma; cushing basophilism; cushing disease; cushing disease due to pituitary adenoma; cushing disease, pituitary

Patient organizations

Source: NIH GARD · Pituitary dependent hypercortisolismGARD ID 12867 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

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