During the past several decades, researchers have discovered more than 100 genetic mutations that cause CMT. In the same time frame, scientists have developed tests that can look at parts of someone’s genetic makeup and identify changes that could cause certain...

CMT is a genetic disorder, meaning it’s caused by a change, or mutation, in your genes. If you have CMT, you might be wondering how you got it. It’s likely that other people in your family have it, too — though this isn’t always the case. To understand how and why,...