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Living with Lateral meningocele syndrome

A genetic condition with sacs of spinal membranes pushing out through gaps in the spine, affecting nerves, bladder, and bones.

Understanding Lateral meningocele syndrome

Lateral meningocele syndrome is a disorder that affects the nervous system, bones, muscles, and other body systems.

Lateral meningoceles are protrusions of the membranes around the spinal cord through gaps in the spine bones, most often in the lower spine. They may damage nerves, causing bladder control trouble, tingling, leg stiffness and weakness, and back pain. Infants may have delayed motor skills and low muscle tone. Intelligence is usually unaffected. Joint looseness, hernias, and spine differences are also common, along with a pattern of facial features. It is noticed in newborns and infants.

Signs & symptoms

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

  • Spinal membranes pushing out through the spine
  • Bladder control trouble
  • Leg stiffness and weakness
  • Very flexible joints
  • Hearing loss from ear differences
  • Hernias

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. Consider genetic testing

    Changes in NOTCH3 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

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 rare disease patient organizations for support
  • 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
Can genetic testing for the NOTCH3 gene confirm the diagnosis?
How should the meningoceles be monitored?
Which specialists should follow bladder function and hearing?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesNOTCH3

Changes in the NOTCH3 gene cause this condition. It is autosomal dominant, meaning one changed copy of the gene is enough to cause it.

GeneticNeurological

Also known as: lehman syndrome; lmns

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Lateral meningocele syndromeGARD ID 9873 · 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 Lateral meningocele syndrome.

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Explore research for Lateral meningocele syndrome

Explore actively recruiting Lateral meningocele syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Lateral meningocele syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • 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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