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Living with Hashimoto-Pritzker syndrome

A very rare skin condition in which red-purple or brown bumps are present at birth and usually go away on their own in a few months.

Understanding Hashimoto-Pritzker syndrome

Hashimoto-Pritzker disease, also called congenital self-healing reticulohistiocytosis, is a very rare disease with skin bumps present at birth or soon after.

Babies have single or multiple red-purple or brown pimple-like papules and nodules. They are painless and usually go away on their own within 2 to 3 months. The skin shows more of a type of immune cell called Langerhans cell histiocytes. Most people have several lesions, but about 25% have only one. New lesions in adulthood, recurrence, and lung or eye involvement are very rare.

Signs & symptoms

GARD doesn't list specific symptoms for this condition. The summary describes:

  • Red-purple or brown skin bumps (papules)
  • Painless lumps or plaques
  • Skin lesions that go away on their own

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

  4. Connect with expert centers

    Histiocytosis Association may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: 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 Histiocytosis 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
How can the diagnosis be confirmed, such as with a skin biopsy?
What follow-up is needed to make sure the lesions go away?
What signs would suggest other organs are involved?

Quick facts

GARD doesn't describe a cause for this condition yet. It describes an increase in Langerhans cell histiocytes, a type of immune cell.

Also known as: congenital langerhans cell histiocytosis; congenital self-healing histiocytosis; langerhans cell histiocytosis - hashimoto-pritzker type

Patient organizations

Source: NIH GARD · Hashimoto-Pritzker syndromeGARD ID 2604 · 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 Hashimoto-Pritzker syndrome.

Explore the Hashimoto-Pritzker syndrome blog

Explore research for Hashimoto-Pritzker syndrome

Explore actively recruiting Hashimoto-Pritzker syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Hashimoto-Pritzker 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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