PMC9309232_01
PMC9309232_02
PMC9309232_03
PMC9309232_04
Interplay between COVD-19 and central disorders of hypersomnolence triggered by external factors. Dark arrows represent the consequences of infection; light gray arrows represent secondary consequences, and measures taken to ameliorate the COVID-19 pandemic; white arrow represents the influence of altered sleep pattern on central disorders of hypersomnolence. COVID-19, coronavirus disease 2019; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; KLS, Kleine- Levin Syndrome; EDS, excessive daytime sleepiness
40675_2022_226_Fig1_HTML.jpg
PMC9309232_04_40675_2022_226_Fig1_HTML.jpg
Fig1
It is important to note that a number of the findings of this review have been contradictory (as shown in Fig. 1).