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Start free with EleplanIsolated congenital syngnathia
ORPHA:141214Malformation syndrome
Also called Isolated congenital maxillomandibular fusion
What it is
Isolated congenital syngnathia is a very rare developmental defect during embryogenesis disorder characterized by varying degrees of congenital fusion (ranging from simple mucosal adhesions to extensive bony fusion) of mandible to maxilla that is not associated with any other malformations. Patients present with mouth opening limitation (which could range from severe to minimal restriction) that typically results in feeding, swallowing and/or respiratory difficulties which may lead to failure to thrive, malnutrition and/or temporomandibular joint ankylosis.
Key facts
- Age of onset
- Neonatal
- Classified as
- Malformation syndrome
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.
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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