Orphanet: Deafness onychodystrophy syndrome

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Deafness-onychodystrophy syndrome

Disease definition

Deafness-onychodystrophy syndrome is a group of rare, genetic, developmental defect during embryogenesis disorders characterized by the association of sensorineural deafness and onychodystrophy (e.g. absent/hypoplastic finger and toenails), as well as brachydactyly and finger-like thumbs. Additional features present in one of the diseases comprising this group include osteodystrophy, intellectual disability, seizures, developmental delay, and distinctive facies.


Classification level: Group of disorders
  • Synonym(s):
    • Hearing loss-onychodystrophy syndrome
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal dominant or Autosomal recessive 
  • Age of onset: Childhood
  • ICD-10: Q87.8
  • OMIM: 124480  220500
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -
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