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Living with Spinocerebellar ataxia type 5

A mild, slowly worsening inherited condition that mostly affects the cerebellum, causing coordination and balance problems.

Understanding Spinocerebellar ataxia type 5

Spinocerebellar ataxia type 5 (SCA5) is an inherited condition that almost exclusively affects the cerebellum.

GARD describes it as a mild form that slowly gets worse. Signs may include loss of coordination of the hands, arms and legs, poor balance when walking and slurred speech. It can begin at a variety of ages.

Signs & symptoms

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

  • Poor coordination
  • Poor balance when walking
  • Slurred speech (dysarthria)
  • Shrinking of the cerebellum

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 SPTBN2 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 of the SPTBN2 gene confirm this diagnosis?
What therapies can help with balance and coordination?
Should family members consider genetic counseling?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Dominant
GenesSPTBN2

GARD says it is caused by changes in the SPTBN2 gene. It is inherited in an autosomal dominant pattern, meaning one changed copy of the gene is enough.

GeneticNeurological

Also known as: sca5

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Spinocerebellar ataxia type 5GARD ID 4953 · 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 5.

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