An underdeveloped jaw or Micrognathia means the lower jaw is significantly smaller than it should be. It is also called mandibular hypoplasia. People who have an underdeveloped jaw are generally born with it. It can cause kids to have breathing and feeding problems. Sometimes underdeveloped jaw corrects itself as the baby grows.
Children with underdeveloped jaws frequently exhibit signs of failure to thrive, a term used by doctors to describe when a child's growth curve begins to fall off.
Symptoms of underdeveloped jaw vary from child to child, but they may include:
Due to breathing difficulties, parents may notice their child turning blue (cyanosis) while feeding or sleeping.
Causes of an underdeveloped jaw are as under:
There's no direct way to prevent an underdeveloped jaw, and the many underlying conditions that cause it can not be prevented either. If it is an inherited disorder, a genetic counselor will tell you how likely you will pass it on to your child.