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Living with Diastematomyelia

A condition present from birth in which the spinal cord is split into two parts, with symptoms from none to back pain and leg weakness.

Understanding Diastematomyelia

Diastematomyelia, also called split spinal cord malformation type 1, is a rare condition in which a person is born with a split spinal cord.

The cord is split into two halves (hemicords), separated by a bony structure, creating a double spinal canal. It is present from birth but may show up at any age and is more common in women. Some people have no symptoms. Others have a tethered cord or other spine differences. It is thought to start with abnormal formation of the notochord and neural tube very early in development.

Signs & symptoms

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

  • Split spinal cord
  • Scoliosis
  • Excess hair growth over the spine area
  • Back pain
  • Bladder problems
  • Leg pain or weakness

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

    Spina Bifida 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: Spina Bifida 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 Spina Bifida 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
Is my cord tethered, and does it need surgery?
Which scans should be used to follow it?
Which specialists, such as neurosurgery and urology, should be involved?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Recessive

GARD says it is thought to be caused by abnormal formation of the notochord and neural tube very early in development. It lists autosomal recessive inheritance.

GeneticNeurological

Also known as: scm type 1; scm type i; split cord malformation; split cord malformation type 1; split cord malformation type i; split spinal cord

Patient organizations

Source: NIH GARD · DiastematomyeliaGARD ID 1851 · 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 Diastematomyelia.

Explore the Diastematomyelia blog

Explore research for Diastematomyelia

Explore actively recruiting Diastematomyelia studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Diastematomyelia 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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