---
title: "Somnambulism and Daytime Sleepiness Caused by Severe Obstructive Sleep Apnea: Case Report"
id: "pubmed-42811568"
canonical_url: "https://medichelpline.com/clinical-feed/pubmed-42811568"
content_type: "clinical_feed_article"
specialty: "Pharmacology"
source_name: "PubMed / NCBI"
source_url: "https://pubmed.ncbi.nlm.nih.gov/42811568/"
doi: "10.3760/cma.j.cn112147-20260526-00311"
published_at: "2026-10-12T00:00:00.000Z"
evidence_level: "Journal Article"
license: "CC-BY-NC-4.0 / Informational Use"
---
# Somnambulism and Daytime Sleepiness Caused by Severe Obstructive Sleep Apnea: Case Report
## Provenance & Clinical Metadata
- **Canonical URL:** https://medichelpline.com/clinical-feed/pubmed-42811568
- **Specialty:** [Pharmacology](https://medichelpline.com/clinical-feed/pharmacology.md)
- **Primary Source:** PubMed / NCBI
- **Source URL:** [Original Journal Publication](https://pubmed.ncbi.nlm.nih.gov/42811568/)
- **DOI:** [10.3760/cma.j.cn112147-20260526-00311](https://doi.org/10.3760%2Fcma.j.cn112147-20260526-00311)
- **Published At:** 2026-10-12T00:00:00.000Z
- **Evidence Rating:** Journal Article
## Executive GIST (TL;DR)
- A 34-year-old man presented with >1 year of **snoring**, 6 months of progressive **daytime sleepiness**, and 2 weeks of recurrent nocturnal fall-related injuries. - Video-polysomnography (**vPSG**) captured a typical **somnambulism** episode occurring during non-rapid eye movement (NREM) sleep and documented **severe obstructive sleep apnea (OSA)**. - The patient underwent continuous positive airway pressure (**CPAP**) therapy; after treatment, somnambulism episodes stopped and sleep architecture normalized. - A previously positive multiple sleep latency test (**MSLT**) result normalized after CPAP, indicating that severe OSA with marked sleep fragmentation and REM rebound can produce **false-positive MSLT** findings. - The case supports performing **vPSG** as the first-line evaluation in patients with daytime sleepiness plus abnormal nocturnal behaviors, treating OSA adequately before performing MSLT, and deferring MSLT until after OSA has been treated. - Authors report no conflicts of interest. Details such as precise vPSG metrics, CPAP pressure settings, and MSLT latencies were not reported in the abstract.
## Clinical Analysis & Structured Key Points
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Affiliations Expand ### Affiliation * 1 Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China. * PMID: **42811568** * DOI: [ 10.3760/cma.j.cn112147-20260526-00311 ](https://doi.org/10.3760/cma.j.cn112147-20260526-00311) Item in Clipboard Case Reports # [Daytime sleepiness with recurrent nocturnal fall-related injuries: a case report of somnambulism triggered by severe obstructive sleep apnea] [Article in Chinese] S S Hu et al. Zhonghua Jie He He Hu Xi Za Zhi. 2026. Show details Display options Display options Format Abstract PubMed PMID Zhonghua Jie He He Hu Xi Za Zhi Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Zhonghua+Jie+He+He+Hu+Xi+Za+Zhi%22%5Bjour%5D&sort=date&sort_order=desc) * [ Search in NLM Catalog ](https://www.ncbi.nlm.nih.gov/nlmcatalog?term=%22Zhonghua+Jie+He+He+Hu+Xi+Za+Zhi%22%5BTitle+Abbreviation%5D) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42811568/) . 2026 Oct 12;49(10):1111-1114. doi: 10.3760/cma.j.cn112147-20260526-00311. ### Authors [S S Hu](https://pubmed.ncbi.nlm.nih.gov/?term=Hu+SS&cauthor_id=42811568)[ 1 ](https://pubmed.ncbi.nlm.nih.gov/42811568/#short-view-affiliation-1 "Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China."), [Q Zhang](https://pubmed.ncbi.nlm.nih.gov/?term=Zhang+Q&cauthor_id=42811568)[ 1 ](https://pubmed.ncbi.nlm.nih.gov/42811568/#short-view-affiliation-1 "Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China."), [M Y Lin](https://pubmed.ncbi.nlm.nih.gov/?term=Lin+MY&cauthor_id=42811568)[ 1 ](https://pubmed.ncbi.nlm.nih.gov/42811568/#short-view-affiliation-1 "Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China."), [M M Zhou](https://pubmed.ncbi.nlm.nih.gov/?term=Zhou+MM&cauthor_id=42811568)[ 1 ](https://pubmed.ncbi.nlm.nih.gov/42811568/#short-view-affiliation-1 "Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China."), [Y J Ge](https://pubmed.ncbi.nlm.nih.gov/?term=Ge+YJ&cauthor_id=42811568)[ 1 ](https://pubmed.ncbi.nlm.nih.gov/42811568/#short-view-affiliation-1 "Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China.") ### Affiliation * 1 Department of Sleep Medicine, The Second Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China. * PMID: **42811568** * DOI: [ 10.3760/cma.j.cn112147-20260526-00311 ](https://doi.org/10.3760/cma.j.cn112147-20260526-00311) Item in Clipboard Full text links Cite Display options Display options Format Abstract PubMed PMID Linked Discoveries ## Abstract in [ English, ](https://pubmed.ncbi.nlm.nih.gov/42811568/#eng-abstract) [ Chinese ](https://pubmed.ncbi.nlm.nih.gov/42811568/#zho-abstract) This article reports a 34-year-old man who presented with snoring for more than 1 year, progressive daytime sleepiness for 6 months, and recurrent nocturnal fall-related injuries for 2 weeks. Video-polysomnography (vPSG) captured a typical somnambulism episode during non-rapid eye movement (NREM) sleep and confirmed the diagnosis of severe obstructive sleep apnea (OSA). After continuous positive airway pressure (CPAP) therapy, somnambulism episodes ceased and sleep architecture normalized. Notably, the result of the multiple sleep latency test (MSLT), which had been positive before treatment, also returned to normal after CPAP, suggesting that severe OSA can cause false-positive MSLT results through severe sleep fragmentation and rapid eye movement (REM) sleep rebound. This case suggests that in patients with sleepiness accompanied by abnormal nocturnal behaviors, vPSG should be performed first to screen for OSA, that OSA should be treated adequately and that MSLT should be deffered until adequate treatment of OSA has been achieved. 本文报道1例34岁男性患者，因“发现睡眠时打鼾1年余，进行性日间嗜睡6个月，夜间反复摔伤2周”就诊。视频多导睡眠监测（vPSG）于非快速眼动睡眠期记录到典型睡行症发作，并明确重度阻塞性睡眠呼吸暂停（OSA）诊断。经持续气道正压通气治疗后，睡行症消失、睡眠结构恢复，同时治疗前呈阳性的多次睡眠潜伏期试验（MSLT）恢复正常，提示重度OSA可通过严重睡眠片段化和快速眼动睡眠反弹导致MSLT假阳性。该病例提示，对于嗜睡伴异常行为的患者，应优先进行vPSG排查并充分治疗OSA，MSLT应在OSA充分治疗后再行评估。. [PubMed Disclaimer](https://pubmed.ncbi.nlm.nih.gov/disclaimer/) ## Conflict of interest statement 所有作者声明无利益冲突 ## Similar articles * [ [Guidelines for the diagnosis and treatment of obstructive sleep apnea in adults (2025)]. ](https://pubmed.ncbi.nlm.nih.gov/41820035/) Chinese Thoracic Society.Chinese Thoracic Society.Zhonghua Jie He He Hu Xi Za Zhi. 2026 Mar 12;49(3):264-296. doi: 10.3760/cma.j.cn112147-20251108-00694.Zhonghua Jie He He Hu Xi Za Zhi. 2026.PMID: 41820035Chinese. * [ Continuous positive airway pressure improves sleep and daytime sleepiness in patients with Parkinson disease and sleep apnea. ](https://pubmed.ncbi.nlm.nih.gov/24470706/) Neikrug AB, Liu L, Avanzino JA, Maglione JE, Natarajan L, Bradley L, Maugeri A, Corey-Bloom J, Palmer BW, Loredo JS, Ancoli-Israel S.Neikrug AB, et al.Sleep. 2014 Jan 1;37(1):177-85. doi: 10.5665/sleep.3332.Sleep. 2014.PMID: 24470706Free PMC article.Clinical Trial. * [ Effect of continuous positive airway pressure (CPAP) on mild-moderate obstructive sleep apnea (OSA) related dreaminess: A case report. ](https://pubmed.ncbi.nlm.nih.gov/32195926/) Xue P, Zhou J, Lei F, Tan L, Li X, Tang X.Xue P, et al.Medicine (Baltimore). 2020 Mar;99(12):e18949. doi: 10.1097/MD.0000000000018949.Medicine (Baltimore). 2020.PMID: 32195926Free PMC article. * [ Polysomnography in patients with obstructive sleep apnea: an evidence-based analysis. ](https://pubmed.ncbi.nlm.nih.gov/23074483/) Medical Advisory Secretariat.Medical Advisory Secretariat.Ont Health Technol Assess Ser. 2006;6(13):1-38. Epub 2006 Jun 1.Ont Health Technol Assess Ser. 2006.PMID: 23074483Free PMC article. * [ [Expert consensus on the diagnosis and treatment of excessive daytime sleepiness in obstructive sleep apnea]. ](https://pubmed.ncbi.nlm.nih.gov/40159049/) Chinese Thoracic Society, Chinese Medical Association.Chinese Thoracic Society, Chinese Medical Association.Zhonghua Jie He He Hu Xi Za Zhi. 2025 Apr 12;48(4):304-317. doi: 10.3760/cma.j.cn112147-20241118-00681.Zhonghua Jie He He Hu Xi Za Zhi. 2025.PMID: 40159049Chinese. 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