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Start free with EleplanSevere intellectual disability-poor language-strabismus-grimacing face-long fingers syndrome
ORPHA:363686Disease
What it is
A rare, genetic, syndromic intellectual disability disorder characterized by global development delay with very limited or absent speech and language, severe intellectual disability, long slender fingers, ocular abnormalities (typically strabismus or hypermetropia), and facial dysmorphism that includes a grimacing facial expression, a tubular-shaped nose with a prominent, broad base and tip, and other variable features, such as broad forehead, hypertelorism, deep-set eyes, narrow palpebral fissures, short philtrum and/or broad mouth.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
18- Abnormal cerebral white matter morphology
- Broad forehead
- Broad nasal tip
- Delayed myelination
- Facial grimacing
- Fine hair
- Floppy infant
- Generalized non-motor (absence) seizure
- Global developmental delay
- Hyperactivity
- Hyperopic astigmatism
- Intellectual disability, severe
- Long fingers
- Poor speech
- Short philtrum
- Strabismus
- Thin upper lip vermilion
- Wide mouth
Sometimes5–29%
30- Astigmatism
- Autistic behavior
- Broad distal phalanx of finger
- Chronic constipation
- Deeply set eye
- Depressed nasal bridge
- Epicanthus
- Feeding difficulties
and 22 more in this range
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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