# What is Down Syndrome?

Canonical: https://pinnacleblooms.org/ask/what-is-down-syndrome
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

Down syndrome is a genetic condition present from birth, caused by an extra copy of chromosome 21 (trisomy 21). Children commonly have some learning delay and shared physical features, but every child is unique — and with early support, speech therapy and inclusive education, they grow and thrive. Developmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional.

*The moment a parent first hears the words "Down syndrome", what they really want is a clear, kind explanation — here it is.*

## In short
Down syndrome is a naturally occurring genetic condition, present from conception, in which a child is born with an extra copy of chromosome 21 (also called trisomy 21). It is one of the most common genetic conditions worldwide and is recognised at or near birth. Children with Down syndrome share some common physical features and usually have some degree of learning delay, but every child is wonderfully different — and with early support, they grow, learn, play and thrive.

## The science, briefly
Most of us are born with 23 pairs of chromosomes. In Down syndrome there is an additional full or partial copy of chromosome 21, which gently changes how the body and brain develop. This is not caused by anything a parent did or didn't do. Children may have characteristic features, may need extra checks for the heart, hearing, vision and thyroid, and typically reach milestones a little later — which is exactly why early developmental support, speech therapy and inclusive education make such a powerful difference.

## The Pinnacle way
AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from a website. From there, your family gets a clear baseline and a practical plan. Explore [Down syndrome support](/down-syndrome), [special education](/special-education) and [how the AbilityScore® works](/ask/what-is-the-abilityscore-and-how-is-it-calculated).

## Trusted sources
WHO ICD-11 lists Down syndrome under code LD40.0. The American Academy of Pediatrics (HealthyChildren.org) and the Indian Academy of Pediatrics provide family-friendly guidance on early health checks and development.

**Next step —** Book a developmental check with a Pinnacle clinician to map your child's strengths and starting point. [Begin here](https://www.pinnacleblooms.org/enroll-autism-speech-aba-therapies-india).

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.

## Sources
- WHO ICD-11: https://icd.who.int/en
- American Academy of Pediatrics — HealthyChildren.org: https://www.healthychildren.org
- CDC — Learn the Signs. Act Early.: https://www.cdc.gov/child-development

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Parent: https://pinnacleblooms.org/ask/lens/stakeholder/parent
- Context: https://pinnacleblooms.org/ask/lens/domain/context
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Special Education: https://pinnacleblooms.org/ask/lens/route/special-education
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity
- Down Syndrome: https://pinnacleblooms.org/ask/lens/condition/down-syndrome
- English: https://pinnacleblooms.org/ask/lens/language/en
- SDG 10: Reduced Inequalities: https://pinnacleblooms.org/ask/lens/sdg/10
- SDG 3: Good Health and Well-being: https://pinnacleblooms.org/ask/lens/sdg/3
- SDG 4: Quality Education: https://pinnacleblooms.org/ask/lens/sdg/4
- ASHA / PHC / Frontline: https://pinnacleblooms.org/ask/lens/stakeholder/asha_phc
- Doctor / Pediatrician: https://pinnacleblooms.org/ask/lens/stakeholder/doctor
- Teacher / Educator: https://pinnacleblooms.org/ask/lens/stakeholder/teacher

## Related question paths

### Understand the subject
- What causes Down Syndrome in children?: https://pinnacleblooms.org/ask/what-causes-down-syndrome-in-children
- What is Down Syndrome, and what are its ICD-11 features in early childhood?: https://pinnacleblooms.org/ask/what-is-down-syndrome-and-what-are-its-icd-11-features-in-early-childhood
- How Down Syndrome Affects a Child's Daily Life: https://pinnacleblooms.org/ask/how-does-down-syndrome-affect-a-child-s-daily-life
- Is Down Syndrome Considered a Disability?: https://pinnacleblooms.org/ask/is-down-syndrome-considered-a-disability
- Is Down Syndrome Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-down-syndrome-genetic-or-hereditary
- Common Myths About Down Syndrome: https://pinnacleblooms.org/ask/what-are-common-myths-about-down-syndrome
- Types of Down Syndrome: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-down-syndrome
- Conditions That Often Occur With Down Syndrome: https://pinnacleblooms.org/ask/what-other-conditions-often-occur-alongside-down-syndrome
- Early Intervention Outcomes for Down Syndrome Under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-down-syndrome-in-children-under-7
- ICD-11 Classification for Down Syndrome (LD40.0): https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-down-syndrome
- What is the SNOMED CT concept for Down Syndrome?: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-down-syndrome
- Which ICF functioning domains does Down Syndrome affect in early childhood?: https://pinnacleblooms.org/ask/which-icf-functioning-domains-does-down-syndrome-affect-in-early-childhood

### Recognise signs & concerns
- Can Down Syndrome Be Cured?: https://pinnacleblooms.org/ask/can-down-syndrome-be-cured
- Can Down Syndrome Be Prevented?: https://pinnacleblooms.org/ask/can-down-syndrome-be-prevented
- Do boys show Down syndrome differently?: https://pinnacleblooms.org/ask/do-boys-show-down-syndrome-differently
- Down Syndrome in Girls: https://pinnacleblooms.org/ask/do-girls-show-down-syndrome-differently
- What are the early signs of Down Syndrome?: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome
- Early Signs of Down Syndrome in a 1-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-1-year-old-boy
- Early Signs of Down Syndrome in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-1-year-old-girl
- Early Signs of Down Syndrome at 12–18 Months: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-12-to-18-month-old
- Early Signs of Down Syndrome in an 18-to-24-Month-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-18-to-24-month-old
- Early Signs of Down Syndrome in a 2-Year-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-2-year-old
- Early Signs of Down Syndrome in a 2-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-2-year-old-boy
- Early Signs of Down Syndrome in a 2-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-down-syndrome-in-a-2-year-old-girl

### Explore causes & influences
- What Causes Down Syndrome in Young Children?: https://pinnacleblooms.org/ask/what-causes-down-syndrome-in-young-children
- Are boys more likely to have Down Syndrome?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-down-syndrome
- Are girls more likely to have Down syndrome?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-down-syndrome
- Early Intervention for Down Syndrome and the UNCRPD & SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-down-syndrome-advance-un-child-rights-uncrpd-and-the-sdgs
- Contributing Factors for Down Syndrome in Early Childhood: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-down-syndrome-in-early-childhood
- Cost-effectiveness of early therapy for Down syndrome in young children: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-down-syndrome-in-young-children
- Down Syndrome in India: Prevalence and Public-Health Burden: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-down-syndrome-among-young-children-in-india

### Understand assessment
- How does AbilityScore track progress in a child with Down Syndrome?: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-down-syndrome
- How Down Syndrome Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-down-syndrome-assessed-in-a-young-child
- AbilityScore 0–100 for Down Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-down-syndrome
- What does an AbilityScore of 100–200 mean for a child with Down Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-down-syndrome
- What does an AbilityScore of 200–300 mean for a child with Down Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-down-syndrome
- What does an AbilityScore of 300–400 mean for a child with Down Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-down-syndrome
- What an AbilityScore of 400–500 Means for a Child with Down Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-down-syndrome
- What does an AbilityScore of 500–600 mean for a child with Down Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-down-syndrome
- What an AbilityScore® of 600–700 Means for a Child with Down Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-down-syndrome
- AbilityScore 700–800 for a Child with Down Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-700-800-mean-for-a-child-with-down-syndrome
- AbilityScore 800–900 for a Child with Down Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-800-900-mean-for-a-child-with-down-syndrome
- What does an AbilityScore of 900–1000 mean for a child with Down Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-900-1000-mean-for-a-child-with-down-syndrome

### Explore therapy & support
- How common is Down syndrome in children?: https://pinnacleblooms.org/ask/how-common-is-down-syndrome-in-children
- Does Down Syndrome Run in Families?: https://pinnacleblooms.org/ask/does-down-syndrome-run-in-families
- How is Down syndrome diagnosed in a child?: https://pinnacleblooms.org/ask/how-is-down-syndrome-diagnosed-in-a-child
- Can a Child with Down Syndrome Attend a Mainstream School?: https://pinnacleblooms.org/ask/can-a-child-with-down-syndrome-attend-a-mainstream-school
- Can a Child with Down Syndrome Attend a Regular School?: https://pinnacleblooms.org/ask/can-a-child-with-down-syndrome-attend-a-regular-school
- Can a Child with Down Syndrome Grow Up to Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-down-syndrome-grow-up-to-live-independently
- How is Down Syndrome supported through therapy?: https://pinnacleblooms.org/ask/how-is-down-syndrome-supported-through-therapy
- Down Syndrome AbilityScore: Your Next Steps: https://pinnacleblooms.org/ask/my-child-with-down-syndrome-has-an-abilityscore-of-0-100-what-should-we-do-next
- Down Syndrome AbilityScore 100–200 — what to do next: https://pinnacleblooms.org/ask/my-child-with-down-syndrome-has-an-abilityscore-of-100-200-what-should-we-do-next
- Down Syndrome AbilityScore 200-300: Next Steps for Parents: https://pinnacleblooms.org/ask/my-child-with-down-syndrome-has-an-abilityscore-of-200-300-what-should-we-do-next
- Down Syndrome: AbilityScore 300–400 — What To Do Next: https://pinnacleblooms.org/ask/my-child-with-down-syndrome-has-an-abilityscore-of-300-400-what-should-we-do-next
- Down Syndrome & an AbilityScore of 400–500: What to Do Next: https://pinnacleblooms.org/ask/my-child-with-down-syndrome-has-an-abilityscore-of-400-500-what-should-we-do-next