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Sleep-Related Hallucinations.

Flavie Waters, Ivan Ling, Somayyeh Azimi, Jan Dirk Blom

Sleep Medicine Clinics March 1, 2024 DOI: 10.1016/j.jsmc.2023.10.008 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Review Peer reviewed
Topics Dreaming
Keywords Classification Dream-like experiences Hallucinations Hypnagogic Hypnopompic
Key findings Hypnagogic and hypnopompic hallucinations without other symptoms are likely non-pathological, while complex nocturnal visual hallucinations may reflect psychopathology.

Abstract

The diagnostic category of sleep-related hallucinations (SRH) replaces the previous category of Terrifying Hypnagogic Hallucinations in the 2001 edition of International Classification of Sleep Disorders-R. Hypnagogic and hypnopompic hallucinations (HHH) that occur in the absence of other symptoms or disorder and, within the limits of normal sleep, are most likely non-pathological. By contrast, complex nocturnal visual hallucinations (CNVH) may reflect a dimension of psychopathology reflecting different combinations of etiologic influences. The identification and conceptualization of CNVH is relatively new, and more research is needed to clarify whether CNVH share common mechanisms with HHH.

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