Rapid Eye Movement Sleep Behavior Disorder
A parasomnia characterized by acting out vivid dreams during REM sleep due to loss of normal muscle atonia.
Full Definition
REM Sleep Behavior Disorder (RBD) involves the loss of normal muscle paralysis during REM sleep, allowing individuals to physically act out their dreams. This can result in complex motor behaviors including talking, yelling, punching, kicking, or jumping from bed, often in response to dream content. The disorder poses injury risk to both patients and bed partners. RBD can be idiopathic or secondary to medications, particularly antidepressants. Of clinical significance, idiopathic RBD is strongly associated with future development of neurodegenerative diseases, particularly Parkinson's disease and dementia with Lewy bodies, making early detection important for long-term monitoring.
Usage
Usage note: May be abbreviated as RBD; emphasize association with neurodegenerative diseases in documentation.
In Context
- "The patient's history of acting out violent dreams led to a diagnosis of REM Sleep Behavior Disorder confirmed by polysomnography." — Sleep study report
- "REM Sleep Behavior Disorder screening is recommended given the strong association with future Parkinson's disease development." — Neurological consultation