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Health library/Cockayne syndrome

Rare developmental disorders / RARE CONDITION

Cockayne syndrome

Also known as: CS, Dwarfism-retinal atrophy-deafness syndrome

Cockayne syndrome affects growth, neurological function and sensitivity to sunlight. Features can progress and include hearing or vision impairment.

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What you may notice

Symptoms can overlap with other conditions and vary between people.

  • Poor growth
  • Developmental delay
  • Sun sensitivity
  • Hearing or vision loss

Understanding care

Clinical care may include coordinated developmental, nutritional and sensory assessment. A qualified clinician decides which investigations and options fit the individual situation.

When to seek help

Arrange specialist assessment for growth, feeding or developmental concerns. Breathing difficulty, loss of responsiveness or new seizures requires urgent care rather than a community review.

For severe breathing difficulty, collapse, suspected stroke, or another emergency, call local emergency services immediately. In India, call 112.

Read the medical sources

These sources support the educational article and offer more detail.

Educational reading · Updated 6 October 2026

Prepared from the linked sources. This summary has not had an independent clinician review. A qualified clinician can assess symptoms and explain which information applies to you.

A child and a caring grown-up reading a picture book together

LITTLE PEOPLE. BIG FEELINGS.

It’s okay to have
a lot of questions.

A doctor visit or an unfamiliar health word can feel scary. You can ask a trusted grown-up to help you understand, one small question at a time.

01

Say how you feel.

“I feel worried” is a good place to start.

02

Ask for simple words.

“Can you explain that in a way I understand?”

03

Bring someone you trust.

A caring adult can help you ask and listen.

For children and their grown-ups. This illustration explains a conversation, not a diagnosis. An adult should seek qualified care for a child who is unwell.

Cockayne syndrome — First AID health library