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Living with Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome

A rare genetic condition with tall stature, stretchy fragile skin, distinct facial features and brain changes.

Understanding Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome

Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome is a rare genetic condition with tall stature and stretchy, thin skin.

People grow tall after birth with long hands and feet and scoliosis. The skin is thin, fragile and very stretchy, and there may be loss of body fat. Facial features include a prominent forehead, bulging eyes and a pointed chin. Intellectual disability varies, and nervous system function may decline. Brain MRI may show white matter changes. It starts in infancy.

Signs & symptoms

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

  • Tall stature and overgrowth
  • Thin, fragile, stretchy skin
  • Scoliosis
  • Bulging eyes
  • Intellectual disability
  • Anxiety or depression

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 bone and joint specialists and genetic specialists.

  3. Consider genetic testing

    Changes in PDGFRB are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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 PDGFRB gene confirm this diagnosis?
How should skin fragility be managed?
How often should the brain and blood vessels be checked?

Quick facts

Symptoms usually startInfant
InheritanceAutosomal Dominant
GenesPDGFRB

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

Genetic

Also known as: kosaki overgrowth syndrome; skeletal overgrowth with facial dysmorphism, hyperelastic skin, white matter lesions, and neurologic deterioration; skeletal overgrowth, craniofacial dysmorphism, hyperelastic skin, white matter lesion syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndromeGARD ID 17860 · 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 Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome.

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