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Living with Progressive myoclonic epilepsy with dystonia

A rare genetic epilepsy syndrome that starts in the newborn or infant period, with seizures and muscle spasms.

Understanding Progressive myoclonic epilepsy with dystonia

Progressive myoclonic epilepsy with dystonia is a rare genetic epilepsy syndrome that begins in the newborn or early infant period.

It causes frequent, long myoclonic seizures that are hard to treat. It also causes episodes of muscle spasms and twisting (dystonia) that later become constant. Other features include very low muscle tone, weakness on one side of the body, loss or lack of developmental skills, and shrinking of parts of the brain.

Signs & symptoms

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

  • Sudden muscle jerks (myoclonus)
  • Muscle spasms and twisting (dystonia)
  • Seizures that don't stop or recover (status epilepticus)
  • Low muscle tone as a newborn
  • Loss of developmental skills
  • Feeding difficulties

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, genetic specialists and seizure and epilepsy specialists.

  3. Consider genetic testing

    Changes in TBC1D24 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Epilepsy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Seizure and epilepsy specialists (epileptologist)
Expert care
Expert lists: Epilepsy 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 Epilepsy 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
Would genetic testing for the TBC1D24 gene help our family?
What can be done for seizures that are hard to control?
What help is available for feeding and muscle tone?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesTBC1D24

This condition is caused by changes in the TBC1D24 gene. A child inherits a changed copy of the gene from each parent (autosomal recessive).

GeneticNeurological

Also known as: pmed; progressive myoclonus epilepsy with dystonia

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Progressive myoclonic epilepsy with dystoniaGARD ID 17522 · 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 Progressive myoclonic epilepsy with dystonia.

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