Down Syndrome Trisomy 21 Patau Syndrome Trisomy 13 Edwards Syndrome Trisomy 18 Klinefelter Syndrome 47 Xxy Turner Syndro Cn322710
Chromosomal disorders resulting from extra or missing chromosomes that affect development and health. These conditions vary in severity and symptoms. Care includes developmental support and managing associated health issues.
Key facts at a glance
- ICD-10
- Q89.9
- ICD-11
- LA00.0
- Body system
- congenital
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Congenital heart defect
Duodenal atresia
Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurological)Early-onset Alzheimer disease
(neurological)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Comprehensive Medical Surveillance
Regular monitoring for associated conditions including cardiac defects, hypothyroidism, hearing loss, and hematologic abnormalities common in chromosomal aneuploidies.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Cardiac Surgical Intervention
Surgical repair of congenital heart defects including atrioventricular septal defects, ventricular septal defects, and patent ductus arteriosus when clinically indicated.
Additional treatment options
Thyroid Hormone Replacement
Levothyroxine supplementation for hypothyroidism management with regular dose monitoring based on thyroid function tests.
medicationEarly Intervention Therapy Services
Structured physical, occupational, and speech therapy programs beginning in infancy to address developmental delays and optimize functional outcomes.
physical_therapyNeurodevelopmental and Behavioral Support
Psychological services addressing cognitive challenges, behavioral concerns, and social skill development through individualized intervention plans.
psychologicalWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Down Syndrome Trisomy 21 Patau Syndrome Trisomy 13 Edwards Syndrome Trisomy 18 Klinefelter Syndrome 47 Xxy Turner Syndro Cn322710?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Down Syndrome Trisomy 21 Patau Syndrome Trisomy 13 Edwards Syndrome Trisomy 18 Klinefelter Syndrome 47 Xxy Turner Syndro Cn322710. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy