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Living with Glucagonoma syndrome

A usually cancerous pancreas tumor that makes too much glucagon and can cause a skin rash, diarrhea, diabetes, and weight loss.

Understanding Glucagonoma syndrome

Glucagonoma syndrome is a usually malignant tumor of the pancreas that makes the hormone glucagon.

The tumor is a neuroendocrine tumor that starts in pancreatic alpha cells. It may be linked with a skin rash called necrolytic migratory erythema, diarrhea, diabetes, an inflamed tongue, weight loss, trouble absorbing nutrients, and anemia. It is usually noticed in adulthood.

Signs & symptoms

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

  • A spreading skin rash (necrolytic migratory erythema)
  • Diabetes
  • Diarrhea
  • Weight loss and poor appetite
  • Inflamed tongue and mouth sores
  • Anemia and fatigue

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, digestive system specialists and hormone specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Cancer specialists (oncologists); Digestive system specialists (gastroenterologists); Hormone specialists (endocrinologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 Pancreatica 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 treatment options are there for the tumor?
How can the skin rash and diabetes be managed?
Which specialists should be on my care team?

Quick facts

Symptoms usually startAdult

GARD doesn't describe a cause for this condition yet. It describes a tumor that arises from the pancreas's alpha cells.

EndocrineGastrointestinal

Also known as: glucagonoma; pancreatic glucagonoma

Patient organizations

Source: NIH GARD · Glucagonoma syndromeGARD ID 2496 · 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

Perspectives from people navigating life with Glucagonoma syndrome.

Explore the Glucagonoma syndrome blog

Explore research for Glucagonoma syndrome

Explore actively recruiting Glucagonoma syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Glucagonoma syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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