Table 1.

Diagnostic criteria for REM sleep behavior disorder (4).

Criteria	Description
1	Repeated episodes of sleep-related vocalization and/or complex motor behaviors
2	These behaviors are documented by polysomnography to occur during REM sleep or, based on clinical history of dream enactment, are presumed to occur during REM sleep
3	Polysomnographic recording demonstrates REM sleep without atonia (RSWA)
4	The disturbance is not better explained by another sleep disorder, mental disorder, medication or substance abuse

All 4 criteria must be met for a definite RBD diagnosis. If v-PSG is not available, or RSWA is not captured during v-PSG then a provisional diagnosis of RBD can be given if all other criteria are met.