May 2019 By PsychDB.com

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sleep:2-benign-sleep-phenomena [May 2019]
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 **Benign Sleep Phenomena** includes sleep paralysis, hypnagogic hallucinations,​ hypnopompic hallucinations,​ and hypnagogic jerks. In isolation, these are occurrences are benign and not pathological. **Benign Sleep Phenomena** includes sleep paralysis, hypnagogic hallucinations,​ hypnopompic hallucinations,​ and hypnagogic jerks. In isolation, these are occurrences are benign and not pathological.
 ===== Hypnagogic and Hypnopompic Hallucinations ===== ===== Hypnagogic and Hypnopompic Hallucinations =====
-Hypnagogic hallucinations are vivid perceptual experiences occurring at sleep onset, while hypnopompic hallucinations are similar experiences that occur at awakening.[([[https://​www.ncbi.nlm.nih.gov/​pubmed/​8894197|Ohayon,​ M. M., Priest, R. G., Caulet, M., & Guilleminault,​ C. (1996). Hypnagogic and hypnopompic hallucinations:​ pathological phenomena?. The British Journal of Psychiatry, 169(4), 459-467.]])] These experiences own their own are //not// symptoms of a pathologic illness. However, the presence of other signs and symptoms such as cataplexy and sleep paralysis may be suggestive of [[sleep:​4-narcolepsy:home|narcolepsy]]. Hypnopompic hallucinations may be a better indicator of narcolepsy than hypnagogic hallucinations.+Hypnagogic hallucinations are vivid perceptual experiences occurring at sleep onset, while hypnopompic hallucinations are similar experiences that occur at awakening.[([[https://​www.ncbi.nlm.nih.gov/​pubmed/​8894197|Ohayon,​ M. M., Priest, R. G., Caulet, M., & Guilleminault,​ C. (1996). Hypnagogic and hypnopompic hallucinations:​ pathological phenomena?. The British Journal of Psychiatry, 169(4), 459-467.]])] These experiences own their own are //not// symptoms of a pathologic illness. However, the presence of other signs and symptoms such as cataplexy and sleep paralysis may be suggestive of [[sleep:​4-narcolepsy|narcolepsy]]. Hypnopompic hallucinations may be a better indicator of narcolepsy than hypnagogic hallucinations.
  
 == Epidemiology == == Epidemiology ==
-The prevalence of hypnagogic and hypnopompic hallucinations in the general population is uncertain. However, it occurs in up to 30% of patients with [[sleep:​4-narcolepsy:home|narcolepsy]].[([[https://​www.ncbi.nlm.nih.gov/​pubmed/​8894197|Ohayon,​ M. M., Priest, R. G., Caulet, M., & Guilleminault,​ C. (1996). Hypnagogic and hypnopompic hallucinations:​ pathological phenomena?. The British Journal of Psychiatry, 169(4), 459-467.]])]+The prevalence of hypnagogic and hypnopompic hallucinations in the general population is uncertain. However, it occurs in up to 30% of patients with [[sleep:​4-narcolepsy|narcolepsy]].[([[https://​www.ncbi.nlm.nih.gov/​pubmed/​8894197|Ohayon,​ M. M., Priest, R. G., Caulet, M., & Guilleminault,​ C. (1996). Hypnagogic and hypnopompic hallucinations:​ pathological phenomena?. The British Journal of Psychiatry, 169(4), 459-467.]])]
  
 ===== Sleep Paralysis ===== ===== Sleep Paralysis =====