Spectrum of rapid eye movement sleep behavior disorder (overlap between rapid eye movement sleep behavior disorder and other parasomnias)

Carlos H. Schenck, Michael J. Howell

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Parasomnia Overlap Disorder (POD) was described and named in 1997 with a series of 33 cases of rapid eye movement (REM) sleep behavior disorder (RBD) combined with a disorder of arousal from non-rapid eye movement (NREM) sleep (sleepwalking, sleep terrors) that emerged idiopathically or symptomatically with neurological and other disorders. POD is a subtype of RBD in the International Classification of Sleep Disorders Diagnostic and Coding Manual, second edition (ICSD-2). An updated classification of POD also includes subclinical RBD-NREM parasomnia, RBD-sleep-related eating disorder, RBD-sexsomnia, RBD-rhythmic movement disorder, and status dissociatus (SD), which is another subtype of RBD in the ICSD-2. Similar to POD, a core feature of SD is sleep motor-behavioral dyscontrol, with release of dream-related behaviors suggestive of RBD, but with nearly continuous ambiguous polygraphic sleep precluding the identification of NREM/REM sleep states. SD exemplifies extreme state dissociation. SD is always a symptomatic disorder, and is causally associated with a broad range of neurologic disorders, often with thalamic, limbic, striatal, and pontine involvement. The parasomnia behaviors associated with POD and SD - typical RBD behaviors - can often be controlled with bedtime clonazepam therapy, including the abnormal dreaming.

Original languageEnglish (US)
Pages (from-to)27-34
Number of pages8
JournalSleep and Biological Rhythms
Volume11
Issue numberSUPPL.1
DOIs
StatePublished - Jun 2013

Keywords

  • NREM sleep parasomnias
  • Neurological disorders
  • Parasomnia overlap disorder
  • Polysomnography
  • REM sleep behavior disorder/RBD
  • Status dissociatus

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