[Sleep related movement and behavior disorders].

Movement and behavior disorders developing during sleep or in the transitional state from sleep to wakefulness are mostly unfamiliar to Japanese neurologists, primarily because these disorders are objects of basic research. In addition, the patients with sleep related movement and behavior disorders (SRMBD) show no signs and symptoms in our consulting rooms, and cannot be identified without polysomnography (PSG) attended by trained sleep technologists. Although attended PSG is not widely available in Japan, some kinds of SRMBD ought to be clinical targets for neurologists, and they are the scope of this review.