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Living with Spinocerebellar ataxia type 4

A very rare inherited condition with worsening coordination problems and loss of feeling in the hands and feet.

Understanding Spinocerebellar ataxia type 4

Spinocerebellar ataxia type 4 (SCA4) is a very rare hereditary movement disorder that slowly gets worse.

Symptoms include muscle weakness, poor coordination, a jerky and unsteady walk and slurred speech. A distinctive feature is progressive loss of feeling in the hands and feet and loss of reflexes. It starts in adulthood. Diagnosis is based on symptoms consistent with the disease.

Signs & symptoms

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

  • Poor coordination (ataxia)
  • Jerky, unsteady walk
  • Slurred speech (dysarthria)
  • Loss of feeling in the hands and feet
  • Absent ankle reflexes
  • Decline in movement ability

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 ZFHX3 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

    National Ataxia 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: National Ataxia 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 National Ataxia 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 confirm this diagnosis?
How should nerve damage in the feet and hands be monitored?
What therapies can help with walking and balance?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant
GenesZFHX3

GARD says it has been linked to a spot on chromosome 16 (16q22.1) and lists the ZFHX3 gene. It is inherited in an autosomal dominant pattern, meaning one changed copy of the gene is enough.

GeneticNeurological

Also known as: sca4

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Spinocerebellar ataxia type 4GARD ID 9970 · 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 Spinocerebellar ataxia type 4.

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