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Living with Troyer syndrome

A genetic condition (a type of hereditary spastic paraplegia) with slowly worsening leg stiffness and weakness from early childhood.

Understanding Troyer syndrome

Troyer syndrome is a complex type of hereditary spastic paraplegia, a group of genetic conditions with stiffness and weakness of the leg muscles.

Signs usually start in early childhood and slowly worsen. They include delays in learning to walk and talk, leg weakness and stiffness, wasting of the muscles in the hands and feet, and short stature. Speech difficulties, bone differences, and mood swings can also occur.

Signs & symptoms

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

  • Leg muscle stiffness and weakness (spasticity)
  • Delays in walking and talking
  • Trouble speaking clearly (dysarthria)
  • Wasting of muscles in the hands and feet
  • Short stature and slow growth
  • Bone differences in the hands, feet, or spine

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 SPART 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

    Spastic Paraplegia Foundation 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: Spastic Paraplegia 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 Spastic Paraplegia 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
Can genetic testing of the SPART gene confirm this diagnosis?
What physical therapy and mobility aids could help?
Which specialists, such as a neurologist, should be on our care team?

Quick facts

Symptoms usually startInfant
InheritanceAutosomal Recessive
GenesSPART

This condition is caused by changes in the SPART gene. It is autosomal recessive, so a child inherits a changed copy of the gene from each parent.

GeneticNeurological

Also known as: autosomal recessive spastic paraplegia 20; autosomal recessive spastic paraplegia troyer type; autosomal recessive spastic paraplegia type 20; childhood-onset spastic paraparesis with distal muscle wasting; childhood-onset spastic paraparesis-distal muscle wasting syndrome; hereditary spastic paraplegia 20

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Troyer syndromeGARD ID 5372 · 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 Troyer syndrome.

Explore the Troyer syndrome blog

Explore research for Troyer syndrome

Explore actively recruiting Troyer syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Troyer syndrome 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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