Hypnagogic and Hypnopompic Hallucinations: Pathological Phenomena?

  title={Hypnagogic and Hypnopompic Hallucinations: Pathological Phenomena?},
  author={Maurice M. Ohayon and Robert G. Priest and Malija{\"i} Caulet and C Guilleminault},
  journal={British Journal of Psychiatry},
  pages={459 - 467}
Background Hypnagogic and hypnopompic hallucinations are common in narcolepsy. However, the prevalence of these phenomena in the general population is uncertain. Method A representative community sample of 4972 people in the UK, aged 15–100, was interviewed by telephone (79.6% of those contacted). Interviews were performed by lay interviewers using a computerised system that guided the interviewer through the interview process. Results Thirty-seven per cent of the sample reported experiencing… 
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Acute, nocturnal-onset, first-time psychopathology warrants inquiry for sleep paralysis and hypnic hallucinations, and sleep-related side-effects of psychotropic medications need to be studied more closely.
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