Signs & Symptoms
Based on Human Phenotype Ontology (HPO) disease-phenotype annotations.
Electroencephalogram abnormal
Very frequent (80-99%)HP:0002353
Non-convulsive status epilepticus without coma
Very frequent (80-99%)HP:0032671
Behavioral changes
Frequent (30-79%)HP:0000708
Epileptic encephalopathy
Frequent (30-79%)HP:0200134
Intellectual deterioration
Frequent (30-79%)HP:0001268
Localized motor seizures
Frequent (30-79%)HP:0011153
Nocturnal seizures
Frequent (30-79%)HP:0031951
Growth deficiency
Occasional (5-29%)HP:0001510
Mental deficiency
Occasional (5-29%)HP:0001249
Neurodevelopmental delay
Occasional (5-29%)HP:0012758
Poor attention span
Occasional (5-29%)HP:0000736
Specific learning disability
Occasional (5-29%)HP:0001328
Quick Facts
- SNOMED CT
- 23686004
- UMLS CUI
- C0265482
- Fully Specified Name
- Ring chromosome 20 syndrome (disorder)
- Specialists
- 0
- Diagnostic Biomarkers
- 0
- HPO Phenotypes
- 12
Medical Disclaimer
This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider regarding any medical condition or treatment plan.
Clinical content is derived from the SNOMED CT clinical ontology and curated medical knowledge graphs.