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Living with Familial restrictive cardiomyopathy

An inherited heart muscle condition in which the heart is too stiff to relax fully between beats.

Understanding Familial restrictive cardiomyopathy

Familial restrictive cardiomyopathy is a genetic form of heart disease in which the heart muscle is stiff and cannot fully relax after each beat.

Blood backs up in the upper chambers and lungs, so the lower chambers get less blood. It can appear anytime from childhood to adulthood. Some children have no obvious signs.

Signs & symptoms

Symptoms differ by age. GARD says children may have:

  • Poor weight gain and growth (failure to thrive)
  • Extreme tiredness (fatigue)
  • Fainting
  • Swelling (edema)
  • Enlarged liver
  • Shortness of breath in adults

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 genetic specialists and heart and blood vessel 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

    Children's Cardiomyopathy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Genetic specialists (geneticists); Heart and blood vessel specialists (cardiologists)
Expert care
Expert lists: Children's Cardiomyopathy Foundation
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 Children's Cardiomyopathy Foundation
  • 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 often should heart function be checked?
Is genetic testing available for my family?
Which heart specialists have experience with this condition?

Quick facts

Changes in genes cause it. GARD doesn't name a gene or describe how it is inherited.

Genetic

Also known as: childhood restrictive cardiomyopathy; hereditary restrictive cardiomyopathy; rcm

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Familial restrictive cardiomyopathyGARD ID 20532 · 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 Familial restrictive cardiomyopathy.

Explore the Familial restrictive cardiomyopathy blog

Explore research for Familial restrictive cardiomyopathy

Explore actively recruiting Familial restrictive cardiomyopathy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Familial restrictive cardiomyopathy 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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