Micrognathia is a term that describes an abnormally small lower jaw.
In true micrognathia, the jaw is small enough to interfere with the infant's feeding. Infants with micrognathia may need special nipples in order to feed properly.
Micrognathia may be the only abnormality in a child. It often corrects itself during growth, especially at puberty when the jaw grows quite a bit. It also can be caused by certain inherited disorders and syndromes.
Micrognathia is one cause of
Pierre Robin syndrome
- Hallerman-Streiff syndrome
Trisomy 13 Trisomy 18
- XO syndrome (
Turner syndrome) Progeria Treacher-Collins syndrome
- Smith-Lemli-Opitz syndrome
- Seckel syndrome
Cri du chat syndrome Marfan syndrome