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Living with Hyaline body myopathy

A rare genetic muscle condition causing slowly worsening muscle weakness, usually beginning in infancy or childhood.

Understanding Hyaline body myopathy

Hyaline body myopathy is a rare muscle condition present from birth, with weakness that slowly gets worse.

It causes weakness or thinning of muscles near and far from the center of the body. Some people have weakness in the shoulder blade and lower leg area, with shoulder blades that stick out (winging). Onset is usually in infancy or childhood, but adult cases have been reported. Some people have breathing problems or heart muscle disease (cardiomyopathy). Muscle biopsy shows hyaline body inclusions.

Signs & symptoms

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

  • Muscle weakness that slowly worsens
  • Muscle thinning (atrophy)
  • Shoulder blade winging
  • Breathing problems
  • Heart muscle disease (cardiomyopathy)

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 brain and nervous system specialists and genetic 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

    Muscular Dystrophy Association may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Expert lists: Muscular Dystrophy 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 Muscular Dystrophy 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 often should breathing and heart function be checked?
Which therapies help maintain strength and movement?
Would genetic testing help our family?

Quick facts

InheritanceAutosomal Dominant, Autosomal Recessive

Changes in genes (also called variants) cause this condition. GARD lists autosomal dominant and autosomal recessive inheritance.

GeneticNeurological

Patient organizations

Source: NIH GARD · Hyaline body myopathyGARD ID 7148 · 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 Hyaline body myopathy.

Explore the Hyaline body myopathy blog

Explore research for Hyaline body myopathy

Explore actively recruiting Hyaline body myopathy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Hyaline body myopathy 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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