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Living with Spinocerebellar ataxia 9

A rare inherited ataxia that causes slowly worsening balance and coordination problems.

Understanding Spinocerebellar ataxia 9

Spinocerebellar ataxia 9 is a rare neurological disease, one of several hereditary ataxias that cause slowly worsening problems with balance and coordination.

People often have an unsteady walk and may slowly lose the ability to walk smoothly. They may have poor hand coordination, making tasks like writing or buttoning clothes hard, and slurred speech. Eye movements can become jerky. Many people develop shrinking of the cerebellum, the brain area that coordinates movement.

Signs & symptoms

GARD doesn't list a separate symptom list for this condition. Based on its summary, symptoms include:

  • Unsteady walk
  • Poor hand coordination
  • Slurred or unclear speech
  • Jerky eye movements
  • 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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    National Ataxia Foundation may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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 type of ataxia?
Which therapies can help with balance and hand skills?
Should family members be tested?

Quick facts

InheritanceAutosomal Dominant

GARD doesn't list a gene. It is inherited in an autosomal dominant pattern, meaning one changed copy of a gene is enough.

Also known as: cerebellar ataxia type 9; sca9; spinocerebellar ataxia type 9

Patient organizations

Source: NIH GARD · Spinocerebellar ataxia 9GARD ID 10481 · 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 9.

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