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Living with Erdheim-Chester disease

A rare slow-growing blood cell condition in which extra immune cells build up and cause inflammation in many organs.

Understanding Erdheim-Chester disease

Erdheim-Chester disease is a rare, slow-growing blood cancer (histiocytic neoplasm) with too many immune cells called histiocytes.

The extra cells cause inflammation that can thicken and scar organs and tissues. Symptoms usually appear between ages 40 and 60, though it can occur at any age. Severity varies widely. Some people have few problems, while others have serious complications.

Signs & symptoms

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

  • Bone pain, often in the lower legs and upper arms
  • Bulging eyes (proptosis)
  • Excess urination and thirst (diabetes insipidus)
  • Fever and night sweats
  • Tiredness (fatigue)
  • Yellowish skin growths around the eyes (xanthelasma)

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 autoimmune and inflammatory disease specialists and skin, hair, and nail 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

    ECD Global Alliance and Histiocytosis Association may keep lists of experts for this condition.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Skin, hair, and nail specialists (dermatologists)
Expert care
Expert lists: ECD Global Alliance, Histiocytosis 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 ECD Global Alliance 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
Which tests will show which organs are affected?
Which treatments are available for this condition?
Which specialists should be on my care team?

Quick facts

Symptoms usually startAdult

GARD doesn't describe a cause for this condition yet.

Skin

Also known as: erdheim chester disease; erdheim-chester syndrome; lipogranulomatosis; lipoid granulomatosis; polyostotic sclerosing histiocytosis

Patient organizations

Source: NIH GARD · Erdheim-Chester diseaseGARD ID 6369 · 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 Erdheim-Chester disease.

Explore the Erdheim-Chester disease blog

Explore research for Erdheim-Chester disease

Explore actively recruiting Erdheim-Chester disease studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Erdheim-Chester disease 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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