Parasomnias Occurring in Non-Rapid Eye Movement Sleep

Sleep medicine: Practice, challenges and new frontiers

Sleep medicine is an ambitious cross-disciplinary challenge, requiring the mutual integration between complementary specialists in order to build a solid framework. Although knowledge in the sleep field is growing impressively thanks to technical and brain imaging support and through detailed clinic-epidemiologic observations, several topics are still dominated by outdated paradigms. In this review we explore the main novelties and gaps in the field of sleep medicine, assess the commonest sleep disturbances, provide advices for routine clinical practice and offer alternative insights and perspectives on the future of sleep research.

Integrative behavioral treatment for NREM parasomnias: a case series

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A variety of behavioral interventions have been shown to improve symptoms of non-rapid eye movement parasomnias. Prior reports have typically examined outcomes of a single behavioral intervention. However, non-rapid eye movement parasomnias may benefit from a multipronged treatment approach similar to that used in the behavioral treatment of other sleep disorders. Through a series of 3 case reports, we demonstrate the utility of a case-conceptualization based, integrative approach to behavioral treatment of adult non-rapid eye movement parasomnias. For all patients (2 with disorders of arousal and 1 with sleep-related eating disorder), symptoms were satisfactorily reduced after 3-6 sessions. Treatment was tailored to each individual, but common elements included education, hypnosis, and identifying and reducing priming factors (eg, stress, insufficient sleep) and precipitating factors (eg, noise or touch from bed partners).

Disorders of Arousal: A Chronobiological Perspective

Non-rapid eye movement (NREM) sleep parasomnias are characterized by motor and emotional behaviors emerging from incomplete arousals from NREM sleep and they are currently referred to as disorders of arousal (DoA). Three main clinical entities are recognized, namely confusional arousal, sleep terror and sleepwalking. DoA are largely present in pediatric populations, an age in which they are considered as transitory, unhabitual physiological events. The literature background in the last twenty years has extensively shown that DoA can persist in adulthood in predisposed individuals or even appear de novo in some cases. Even though some episodes may arise from stage 2 of sleep, most DoA occur during slow wave sleep (SWS), and particularly during the first two sleep cycles. The reasons for this timing are linked to the intrinsic structure of SWS and with the possible influence on this sleep phase of predisposing, priming and precipitating factors for DoA episodes. The objective of this paper is to review the intrinsic sleep-related features and chronobiological aspects affecting SWS, responsible for the occurrence of the majority of DoA episodes during the first part of the night.