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Start free with EleplanIntellectual disability-myopathy-short stature-endocrine defect syndrome
ORPHA:3068Disease
Also called Chudley-Rozdilsky syndrome
What it is
Intellectual disability-myopathy-short stature-endocrine defect syndrome is a rare congenital myopathy syndrome characterized by nonprogressive myopathy (manifesting with mild facial and generalized weakness, bilateral ptosis, and severe lumbar lordosis), severe intellectual disability, short stature, and sexual infantilism (due to hypogonadotropic hypogonadism). The presence of a small pituitary fossa was also noted. There have been no further descriptions in the literature since 1985.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Neonatal
- 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%
19- Abnormal muscle fiber morphology
- Abnormal palate morphology
- Clinodactyly of the 5th finger
- Craniofacial hyperostosis
- Delayed skeletal maturation
- Disproportionate tall stature
- Downslanted palpebral fissures
- Facial palsy
- Hyperlordosis
- Hypertelorism
- Hypogonadotropic hypogonadism
- Hypoplasia of penis
- Intellectual disability, severe
- Myopia
- Ophthalmoparesis
- Ptosis
- Short stature
- Skeletal muscle atrophy
- Sparse body hair
Common30–79%
5These 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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