Genetic brain disorders
Genetic brain disorders are caused by a variation or a mutation in a gene. They affect the development and function of the brain. Some genetic disorders are due to random gene mutations or mutations caused by environmental factors. Others are inherited also known as passed down from one generation to another.
Some of the disorders
This disease affects the cells of the brain called the sheath, the material that protects nerve cells. Damage to it can cause messages to be stopped or blocked.
After the baby is born they will perform screening tests before you leave the hospital. These tests are determined on which state you live in. They look for serious conditions (at least 30) and if not treated can cause lifelong problems. If serious then treatment should start right away.
Treatments and coping with the defect
From the information i've gathered what i can tell is that they are treatable but not curable. One common way of treating them is going to a pediatrician