glossoptosis

Glossoptosis is a medical condition and abnormality which refers to the downward displacement or retraction of the tongue.

The glossoptosis and micrognathism generally do not require surgery, as they improve to some extent unaided, though the mandibular arch remains significantly smaller than average.

PRS is characterized by an unusually small mandible (micrognathia), posterior displacement or retraction of the tongue (glossoptosis), and upper airway obstruction.

The three main features are cleft palate, retrognathia (abnormal positioning of the jaw or maxilla) and glossoptosis (airway obstruction caused by backwards displacement of the tongue base).

There are also possible skeletal defects that could result from exposure to carbon monoxide during the embryonic stage, such as hand and foot malformations, hip dysplasia, hip subluxation, agenisis of a limb, and inferior maxillary atresia with glossoptosis.