Sleep and Breathing

, Volume 23, Issue 4, pp 1301–1302 | Cite as

Finding a needle in the haystack—narcolepsy and obstructive sleep apnea

  • Ana Carolina Aguilar
  • Pedro Henrique Reis Caldeira Brant
  • Sergio Tufik
  • Fernando Morgadinho CoelhoEmail author
Sleep Breathing Physiology and Disorders • Letter to the Editors

Dear Editor,

Narcolepsy is a rare disorder characterized by excessive daytime sleepiness (EDS), sleep paralysis, cataplexy, and hypnagogic hallucinations, which diagnosis depends on careful clinical consideration and confirmation for polysomnography (PSG) and multiple sleep latency test (MSLT) [1]. EDS is an essential symptom that may be the primary concern for narcolepsy patients, leading to distress and impairment regarding The International Classification of Sleep Disorders (ICSD-3) [1]. However, it can also be found in other conditions as insufficient sleep syndrome and sleep disturbances such as obstructive sleep apnea (OSA) with a vast impact on general quality of life too.

OSA syndrome and narcolepsy are conditions that lead to daytime sleepiness. They can coexist in the same person, but the accurate diagnosis can be delayed by overlap of symptoms, risk factors, and comorbidities. OSA exists in narcolepsy patients due to the higher prevalence of obesity, and narcolepsy is a...



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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Departamento de Neurologia e NeurocirurgiaUniversidade Federal de São PauloSão PauloBrazil
  2. 2.Departamento de PsicobiologiaUniversidade Federal de São PauloSão PauloBrazil
  3. 3.Escola de Artes Ciências e HumanidadesUniversidade de São PauloSão PauloBrazil

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