What is the main characteristic of micrognathia?

The main characteristic of micrognathia is indeed an undersized jaw. This condition typically involves a mandibular (lower jaw) development that is smaller than normal. It can often lead to difficulties with feeding and can affect overall facial symmetry and appearance. In children, micrognathia can coincide with other conditions such as Pierre Robin sequence, making it important to diagnose early for appropriate management.

While conditions like enlarged tonsils, excessive drooling, and obstructive sleep apnea can be associated with various anatomic or developmental abnormalities, they are not defining characteristics of micrognathia itself. Understanding the fundamental nature of micrognathia helps in distinguishing it from other symptoms or conditions that may occur concurrently but are not central to its diagnosis.