[Prognostic Counseling in Patients with Isolated REM Sleep Behavior Disorder].

Long-term follow-up studies have shown that middle-aged and elderly people with isolated REM sleep behavior disorder (RBD) have a high risk of developing alpha-synucleinopathy. In order to respond appropriately to these patients, it is necessary to confirm the diagnosis of RBD using video-polysomnography(v-PSG) and provide prognostic counseling that takes into account future life plans based on patient backgrounds and family conditions. This article provides an overview of prognostic counseling for isolated RBD, including a sleep specialist's perspective on disclosing the risks of phenoconversion associated with isolated RBD.