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Living with Spinocerebellar ataxia type 14

An inherited condition with slowly worsening balance and coordination problems, starting at a wide range of ages.

Understanding Spinocerebellar ataxia type 14

Spinocerebellar ataxia type 14 (SCA14) is an inherited condition with slowly worsening poor coordination, slurred speech and abnormal eye movements.

Muscle jerks, thinking problems, tremor and loss of feeling may also be seen. Some families have parkinsonian features such as stiffness and tremor. The average age of onset is in the 30s, ranging from childhood to the seventh decade.

Signs & symptoms

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

  • Poor coordination and unsteady walk
  • Poor coordination of the arms and legs
  • Shrinking of the cerebellar vermis
  • Low muscle tone
  • Slurred speech (less common)
  • Jerky eye movements (less common)

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 PRKCG 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 PRKCG 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
GenesPRKCG

GARD lists changes in the PRKCG gene. It is inherited in an autosomal dominant pattern, meaning one changed copy of the gene is enough.

GeneticNeurological

Also known as: sca14; spinocerebellar ataxia type14

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Spinocerebellar ataxia type 14GARD ID 9867 · 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 14.

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