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Living with Insulin autoimmune syndrome

A rare condition in which the body makes antibodies against insulin, causing low blood sugar.

Understanding Insulin autoimmune syndrome

Insulin autoimmune syndrome is a rare condition that causes low blood sugar (hypoglycemia).

The body makes antibodies, proteins that attack insulin. Insulin normally keeps blood sugar at a normal level. When antibodies attack insulin, blood sugar can drop too low. It most often begins in adulthood.

Signs & symptoms

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

  • Low blood sugar (hypoglycemia)
  • Antibodies against insulin (autoimmunity)
  • Insulin resistance
  • Darkened, thickened skin (acanthosis nigricans)
  • Joint pain or inflammation
  • Lupus (systemic lupus erythematosus)

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 hormone specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    Autoimmune Association may keep lists of experts for this condition.

Care & treatment

Care team
Hormone specialists (endocrinologists)
Expert care
Expert lists: Autoimmune 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 Autoimmune Association
  • 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
Which tests confirm antibodies against insulin?
How can I recognize and respond to low blood sugar?
Are other autoimmune conditions linked to mine?

Quick facts

Symptoms usually startAdult and as an Older Adult

The body makes antibodies that attack insulin. GARD doesn't list a gene or inheritance pattern.

Endocrine

Also known as: hirata disease

Patient organizations

Source: NIH GARD · Insulin autoimmune syndromeGARD ID 10808 · 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 Insulin autoimmune syndrome.

Explore the Insulin autoimmune syndrome blog

Explore research for Insulin autoimmune syndrome

Explore actively recruiting Insulin autoimmune syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Insulin autoimmune 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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