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Living with Pallister-W syndrome

A rare X-linked genetic condition with intellectual disability, seizures, and distinct facial features.

Understanding Pallister-W syndrome

Pallister-W syndrome is a rare genetic condition with differences present from birth.

People have moderate to severe intellectual disability and nervous system signs such as seizures and muscle stiffness. They also have certain facial features, like a broad forehead, wide-set eyes, a flat nasal bridge, and a notch in the upper lip. Hearing loss, slow growth, and bone and joint differences have also been described.

Signs & symptoms

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

  • Delays in development (global developmental delay)
  • Seizures
  • Muscle stiffness (spasticity)
  • Eyes that cross (esotropia)
  • Missing upper front teeth
  • Flat feet or high-arched feet

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, ear, nose, and throat specialists and genetic specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Ear, nose, and throat specialists (otolaryngologists); Genetic specialists (geneticists)
Expert care
Expert lists: World Craniofacial 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 FACES: The National Craniofacial Association and other patient organizations
  • 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
How can seizures be managed and monitored?
Should we check hearing and eyesight?
What does X-linked inheritance mean for other family members?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceX-Linked

Changes in the genes (also called variants) cause this condition. It is X-linked, which means the gene involved is on the X chromosome. GARD doesn't list a specific gene.

GeneticNeurological

Also known as: pallister w syndrome; w syndrome

Patient organizations

Source: NIH GARD · Pallister-W syndromeGARD ID 358 · 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 Pallister-W syndrome.

Explore the Pallister-W syndrome blog

Explore research for Pallister-W syndrome

Explore actively recruiting Pallister-W syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Pallister-W syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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