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Start free with EleplanAlopecia-contractures-dwarfism-intellectual disability syndrome
ORPHA:1005Malformation syndrome
Also called ACD-intellectual disability syndrome
What it is
A form of ectodermal dysplasia syndrome characterized by a short stature of prenatal onset, alopecia, ichthyosis, photophobia, ectrodactyly, seizures, scoliosis, multiple contractures, fusions of various bones (particularly elbows, carpals, metacarpals, and spine), intellectual disability, and facial dysmorphism (microdolichocephaly, madarosis, large ears and long nose). ACD syndrome overlaps with ichthyosis follicularis-alopecia-photophobia syndrome.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Antenatal, Neonatal
- Inheritance
- Autosomal recessive
- Classified as
- Malformation syndrome
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%
8- Alopecia
- Hypohidrosis
- Intellectual disability
- Intellectual disability, progressive
- Joint stiffness
- Kyphosis
- Severe short stature
- Sparse hair
Common30–79%
23- Abnormal helix morphology
- Abnormality of dental enamel
- Abnormality of the antihelix
- Abnormality of the elbow
- Abnormal toenail morphology
- Biparietal narrowing
- Brachydactyly
- Clinodactyly of the 5th finger
- Finger syndactyly
- Hyperkeratosis
- Hypertelorism
- Intrauterine growth retardation
- Macrotia
- Microcephaly
- Moderate postnatal growth retardation
- Myopia
- Posteriorly rotated ears
- Prominent nose
- Short middle phalanx of finger
- Synostosis of carpal bones
- Turricephaly
- Upslanted palpebral fissure
- Vertebral segmentation defect
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.
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