Idiopathic rapid eye movement sleep behaviour disorder

Maria Livia Fantini, L. Ferini-Strambi

Research output: Contribution to journalArticle

Abstract

Rapid eye movement (REM) sleep behaviour disorder (RBD) is a parasomnia characterised by elaborate behaviours during REM sleep usually associated with action-filled dreams. Typical behaviours are screaming, grasping, punching, kicking and occasionally jumping out of bed, which are potentially harmful for the patient and their bed partner. Polysomnographic (PSG) recording reveals a loss of atonia and an excessive phasic motor activity during REM sleep. RBD affects mainly men over 50 years and its prevalence in the general population is estimated around 0.5%. It may occur in acute or chronic forms. The latter may be isolated (idiopathic RBD), or associated with other neurological diseases (symptomatic RBD), especially with a group of neurodegenerative disease called alpha-synucleinopathies, which includes Parkinson's disease, dementia with Lewy bodies (DLB) and multiple system atrophy. The idiopathic form accounts for up to 60% of the cases reported in the literature. Small clinical follow-up studies revealed that a proportion of these patients will eventually develop a parkinsonian syndrome and/or a DLB in the years following the RBD diagnosis, while some patients will remain idiopathic for decades. Recent studies found evidence of neural dysfunction during both wakefulness and sleep in iRBD, such as an impairment of the cortical activity, specific neuropsychological deficits, signs of autonomic dysfunction, deficit of colour discrimination, subtle abnormalities in quantitative measures of motor and gait speed and an olfactory impairment. The notion of "idiopathic" RBD is currently challenged and the use of a more conservative term of "cryptogenic" RBD has been suggested.

Original languageEnglish
JournalNeurological Sciences
Volume28
Issue numberSUPL.1
DOIs
Publication statusPublished - Jan 2007

Fingerprint

REM Sleep Behavior Disorder
Lewy Body Disease
Sleep
REM Sleep
Parasomnias
Multiple System Atrophy
Wakefulness
Parkinsonian Disorders
Neurodegenerative Diseases
Parkinson Disease
Motor Activity
Color

Keywords

  • Neurodegenerative diseases
  • Parasomnia
  • REM sleep behaviour disorder

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Neurology

Cite this

Idiopathic rapid eye movement sleep behaviour disorder. / Fantini, Maria Livia; Ferini-Strambi, L.

In: Neurological Sciences, Vol. 28, No. SUPL.1, 01.2007.

Research output: Contribution to journalArticle

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