The transition from pediatric neurology to adult neurology is not easy for patients with childhood-onset neurological or muscular diseases. The reasons can be broadly categorized into patient-related and transition system issues. To resolve these issues, the following are important: 1)promoting awareness of the necessity of future transition among patients and their families during childhood, 2)establishing a transition support team to coordinate the transitions and collect information about medical institutions for adults that can accept patients who need transition, and above all, 3)facilitating close communication and information sharing between the concerned adult and pediatric neurologists.