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Living with Pterygium colli-intellectual disability-digital anomalies syndrome

A rare syndrome present from birth with a webbed neck, differences in the thumbs, distinct facial features, and intellectual disability.

Understanding Pterygium colli-intellectual disability-digital anomalies syndrome

Pterygium colli-intellectual disability-digital anomalies syndrome is a rare disorder with a webbed neck, hand differences, and facial differences, present from birth.

Hand differences include small thumbs set close to the wrist, widened finger joints, and broad fingertip bones. Facial features can include a short, broad skull, folds at the inner eye corners, arched eyebrows, drooping eyelids, wide-set eyes, and low-set ears. Intellectual disability and low muscle tone are also listed.

Signs & symptoms

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

  • Webbed neck (pterygium colli)
  • Thumbs set close to the wrist
  • Widened finger joints
  • Intellectual disability
  • Low muscle tone (hypotonia)
  • Wide-set eyes and drooping eyelids

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. Ask which tests can help

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

Care & treatment

Care team
Brain and nervous system specialists (neurologists); 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
Is genetic testing available to find the cause?
What therapies can help with learning and muscle tone?
Should relatives be checked?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant, X-Linked

GARD says it is inherited in either an X-linked dominant or autosomal dominant pattern. It doesn't name a gene yet.

GeneticNeurological

Also known as: khalifa graham syndrome; khalifa-graham syndrome; pterygium colli and impaired intellectual development with facial and digital anomalies; pterygium colli with intellectual disability and digital anomaly syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Pterygium colli-intellectual disability-digital anomalies syndromeGARD ID 4568 · 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 Pterygium colli-intellectual disability-digital anomalies syndrome.

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