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Living with Striatal degeneration, autosomal dominant

An inherited movement condition that starts in adulthood, with slow movements, muscle stiffness, and speech trouble.

Understanding Striatal degeneration, autosomal dominant

Autosomal dominant striatal degeneration is an adult-onset movement condition.

It causes slow movements (bradykinesia), slurred or hard-to-form speech (dysarthria), and muscle stiffness. It affects a part of the brain that helps control movement, called the striatum. Signs usually begin in adulthood.

Signs & symptoms

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

  • Slow movements
  • Muscle stiffness (rigidity)
  • Slurred or hard-to-form speech
  • Trouble with quick, alternating movements
  • Trouble walking
  • Trouble swallowing

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 PDE8B 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

    Parkinson & Movement Disorder Alliance 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: Parkinson & Movement Disorder Alliance
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 Parkinson & Movement Disorder Alliance
  • 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
Which movement or neurology specialist should follow me?
What therapies can help with speech and swallowing?
Would PDE8B gene testing help my family?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant
GenesPDE8B

Changes in the PDE8B gene cause this condition. It is autosomal dominant, meaning one changed copy of the gene can cause it.

GeneticNeurological

Also known as: adsd; autosomal dominant striatal neurodegeneration

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Striatal degeneration, autosomal dominantGARD ID 17146 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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