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Living with Intermediate nemaline myopathy

A type of nemaline myopathy, a muscle condition present at birth, with a more severe course.

Understanding Intermediate nemaline myopathy

Intermediate nemaline myopathy is a type of nemaline myopathy (NM) with the typical features of NM in newborns and a more severe progression.

It is present from birth. GARD lists problems such as weak muscles, stiff joints, and reduced movement.

Signs & symptoms

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

  • Weak muscles with reduced movement
  • Walking problems
  • Stiff joints that can't fully straighten (contractures)
  • Facial weakness
  • Reduced reflexes
  • Differences in the chest shape

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.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
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 A Foundation Building Strength
  • 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 type of nemaline myopathy do I or my child have?
Can genetic testing find the gene involved?
What therapy helps with breathing and mobility?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant, Autosomal Recessive

GARD lists both autosomal dominant and autosomal recessive inheritance. It doesn't name a gene.

GeneticNeurological

Patient organizations

Source: NIH GARD · Intermediate nemaline myopathyGARD ID 12823 · 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 Intermediate nemaline myopathy.

Explore the Intermediate nemaline myopathy blog

Explore research for Intermediate nemaline myopathy

Explore actively recruiting Intermediate nemaline myopathy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Intermediate nemaline 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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