You might know of someone else in your family has it and you might see some symptoms that they also had. If you have trouble walking and standing for a long period of time, have muscle and nerve pain, have a hard time opening things and buttoning things, trimmers in your hands, for deformity, claw hands and toes, and tingles and numbness in fingers and hands are very known symptoms of CMT. Do you know for sure you have to go to a doctor and have genetic testing done along with a few other tests