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Living with Rienhoff syndrome

A rare inherited condition that affects blood vessels, bones, the face, and skin, and can cause weak, bulging areas in arteries.

Understanding Rienhoff syndrome

Rienhoff syndrome is a rare inherited condition that affects the blood vessels, bones, head and face, and skin.

Blood vessels in the brain, chest, or belly can develop aneurysms (weak, bulging areas) or tears in the vessel wall. People may have a different chest shape, a curved spine, loose joints, long fingers, or foot changes. Features vary widely, even among family members. Pregnancy can involve serious complications, including tearing of the uterus.

Signs & symptoms

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

  • Bulging in the aorta wall (aortic root aneurysm)
  • Long, slender fingers (arachnodactyly)
  • Low muscle tone and delayed motor skills
  • Cleft soft palate
  • Broad face and bulging eyes
  • Flat feet and stiff finger or toe joints

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.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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 The John Ritter Foundation for Aortic Health
  • 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
Should we have genetic testing for this condition?
How often should my blood vessels be scanned?
What should we know before pregnancy or surgery?

Quick facts

InheritanceAutosomal Dominant

GARD lists autosomal dominant inheritance, so one changed copy of a gene can be enough. It does not name a gene in this record.

Also known as: loeys-dietz syndrome 5; loeys-dietz syndrome type 5

Patient organizations

Source: NIH GARD · Rienhoff syndromeGARD ID 12356 · 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 Rienhoff syndrome.

Explore the Rienhoff syndrome blog

Explore research for Rienhoff syndrome

Explore actively recruiting Rienhoff syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Rienhoff 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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