Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanAicardi syndrome
ORPHA:50Disease
Also called Agenesis of corpus callosum with chorioretinal abnormality
What it is
A rare neurodevelopmental disorder characterized by the classic triad of agenesis of the corpus callosum (total or partial), central chorioretinal lacunae and infantile spasms that affects almost exclusively females.
Key facts
- Prevalence
- 1-9 / 1 000 000
- Age of onset
- Neonatal
- Inheritance
- X-linked 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
Very common80–99%
9Common30–79%
20- Aplasia/Hypoplasia of the cerebellum
- Bifid ribs
- Block vertebrae
- Butterfly vertebrae
- EEG abnormality
- Hemiplegia/hemiparesis
- Hypertonia
- Hypotonia
- Microcephaly
- Microphthalmia
- Missing ribs
- Premaxillary Prominence
- Protruding ear
- Rib fusion
- Scoliosis
- Short philtrum
- Sparse lateral eyebrow
- Spasticity
- Supernumerary ribs
- Ventriculomegaly
Sometimes5–29%
21- Abnormality of skin pigmentation
- Chorioretinal coloboma
- Cleft palate
- Cleft upper lip
- Constipation
- Delayed puberty
- Feeding difficulties in infancy
- Gastroesophageal reflux
and 13 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.
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.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.