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Living with Hereditary spastic paraplegia 8

A type of hereditary spastic paraplegia caused by changes in the WASHC5 gene, starting in the teens or adulthood.

Understanding Hereditary spastic paraplegia 8

Hereditary spastic paraplegia 8 is a type of hereditary spastic paraplegia caused by a change in the WASHC5 gene.

It causes stiff, weak legs, a spastic walk, brisk reflexes, high arches, and bladder problems. Some people have trouble with balance and coordination. It starts in the teen years or adulthood.

Signs & symptoms

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

  • Stiff legs (spasticity)
  • Spastic walk
  • Leg weakness
  • High-arched feet (pes cavus)
  • Bladder urgency or loss of control
  • Poor coordination of the limbs

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 WASHC5 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

    Spastic Paraplegia 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: Spastic Paraplegia 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 Spastic Paraplegia 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
Could genetic testing for the WASHC5 gene confirm the diagnosis?
How can bladder problems be managed?
Which therapies help with stiffness and balance?

Quick facts

Symptoms usually startTeenager and as an Adult
InheritanceAutosomal Dominant
GenesWASHC5

It is caused by changes in the WASHC5 gene. It is autosomal dominant, so one changed copy of the gene is enough.

GeneticNeurological

Also known as: autosomal dominant spastic paraplegia 8; autosomal dominant spastic paraplegia type 8; hereditary spastic paraplegia caused by mutation in washc5; hereditary spastic paraplegia type 8; spastic paraplegia 8, autosomal dominant; spg8

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Hereditary spastic paraplegia 8GARD ID 9591 · 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 Hereditary spastic paraplegia 8.

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