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Start free with EleplanProgeria-short stature-pigmented nevi syndrome
ORPHA:2959Malformation syndrome
Also called Mulvihill-Smith syndrome
What it is
A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by intrauterine growth retardation and short stature, microcephaly, premature aging, bird-like facies with lack of facial subcutaneous fat, multiple pigmented nevi, sensorineural hearing loss, and variable intellectual disability. Immunodeficiency and development of tumors have also been described.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
- Inheritance
- Unknown
- 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%
48- Abnormality of thalamus morphology
- Abnormally high-pitched voice
- Abnormal muscle tone
- Alopecia
- Band keratopathy
- Bifid uvula
- Bird-like facies
- Brachydactyly
- Broad-based gait
- Cataract
- Central sleep apnea
- Cognitive impairment
- Decreased serum estradiol
- Decreased serum testosterone concentration
- Decreased total T cell count
- Delayed puberty
- Dental malocclusion
- Elevated circulating hepatic transaminase concentration
- Fragile teeth
- Gastroesophageal reflux
- Hepatic steatosis
- Hypergonadotropic hypogonadism
- Hyperpigmented nevi
- Hypodontia
- Hypospadias
- Immunodeficiency
- Insomnia
- Insulin-resistant diabetes mellitus
- Lack of facial subcutaneous fat
- Low posterior hairline
- Microcephaly
- Micrognathia
- Micropenis
- Multiple joint contractures
- Osteopenia
- Paresthesia
- Prematurely aged appearance
- Premature ovarian insufficiency
- Progeroid facial appearance
- Progressive sensorineural hearing impairment
- Progressive visual loss
- Recurrent viral infections
- Selective tooth agenesis
- Short distal phalanx of finger
- Short stature
- Sleep abnormality
- Small for gestational age
- Supraventricular arrhythmia
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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