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Living with Cockayne syndrome

A rare condition with a small head, slow growth, delayed development, and sensitivity to sunlight, usually clear from infancy.

Understanding Cockayne syndrome

Cockayne syndrome is a rare disorder with a small head, slow weight gain and growth, very short stature, and delayed development.

Signs are usually clear from infancy and worsen over time. Most people are very sensitive to sunlight and can burn or blister quickly. Other signs include hearing loss, vision loss, severe tooth decay, bone differences, cold hands and feet, and brain changes seen on scans. GARD says people with Cockayne syndrome can have a serious reaction, including liver failure, to an antibiotic called metronidazole. It is sometimes divided into types I, II, and III.

Signs & symptoms

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

  • Small head size (microcephaly)
  • Slow growth and short stature
  • Delayed development
  • Sensitivity to sunlight
  • Hearing and vision loss
  • Severe tooth decay

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, cancer specialists, ear, nose, and throat specialists and eye disease 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); Cancer specialists (oncologists); Ear, nose, and throat specialists (otolaryngologists); Eye disease specialists (ophthalmologists)
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 Cockayne Syndrome Foundation 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
Can genetic testing confirm the type of Cockayne syndrome?
Which medicines should we avoid, such as metronidazole?
How can we protect the skin from the sun?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Recessive

GARD says it is autosomal recessive, so a child inherits a changed copy of the gene from each parent. It doesn't name a gene on this page.

GeneticNeurologicalSkin

Also known as: neill-dingwall syndrome

Patient organizations

Source: NIH GARD · Cockayne syndromeGARD ID 6122 · 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 Cockayne syndrome.

Explore the Cockayne syndrome blog

Explore research for Cockayne syndrome

Explore actively recruiting Cockayne syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Cockayne 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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