title: Hypnagogic behavior disorder: complex motor behaviors during wake-sleep transitions in 2 young children.
abstract: A nondescribed behavioral disorder was observed during wake-sleep transitions in 2 young children. Two boys had episodes of abnormal behavior in hypnagogic-and occasionally hypnopompic-periods for 1 year from the time they were 1 year and several months old. The episodes consisted of irregular body movements, which could be either gentle or violent but never made the children get out of bed. They lasted from a few seconds to 2 hours and were associated with poor reactivity and amnesia of the events. Electroencephalography (EEG) recordings showed wake-state features, with brief bursts of hypnagogic hypersynchrony, and did not display seizure activity. A distinctive behavior disorder occurring during wake-sleep transitions with a wake EEG pattern has been identified in very early childhood. The clinical profile does not fit any of the known parasomnias and might belong to a new category of parasomnia.
authors.affiliation: Sleep Disorder Center, Department of Neurology, Hospital Quirón Madrid, Pozuelo de Alarcón, Madrid, Spain. jpg03m@saludalia.com
authors.forename: Juan A
authors.initials: JA
authors.lastname: Pareja
authors.forename: María Luz
authors.initials: ML
authors.lastname: Cuadrado
authors.forename: Irene
authors.initials: I
authors.lastname: García-Morales
authors.forename: Antonio
authors.initials: A
authors.lastname: Gil-Nagel
authors.forename: Oriol
authors.initials: O
authors.lastname: Franch
mesh_terms: D002653:Child Behavior Disorders / Q000175:diagnosis*; D002675:Child, Preschool; D004569:Electroencephalography; D006212:Hallucinations / Q000175:diagnosis*; D006801:Humans; D008297:Male; D017286:Polysomnography; D012075:Remission, Spontaneous; D012815:Signal Processing, Computer-Assisted; D020922:Sleep-Wake Transition Disorders / Q000175:diagnosis*; D014741:Video Recording