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Sleep and Circadian Rhythm in Post-COVID-19 Patients

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COVID-19 and Sleep: A Global Outlook

Part of the book series: Progress in Sleep Research ((PSR))

Abstract

The current COVID-19 pandemic caused enormous suffering to people in the disease state and caused significant mortality; the morbidity of people after COVID-19 is also alarming. It is named post-COVID conditions by WHO and CDC USA. Its estimated prevalence ranges from 10% to 50%, and circadian rhythm sleep disturbance is one of the essential symptoms of the post-COVID state. The circadian sleep disturbance may appear isolated or comorbid, associated with other symptoms like chronic fatigue syndrome, depression, post-traumatic stress disorder, and anxiety. The relationship of the circadian rhythm disturbance with the comorbid condition may be bidirectional. The circadian rhythm modulates gene expression, body metabolism, immune status, and endocrine function of the body, as well as a person’s behavior. So, the consequences of sleep rhythm disturbance may be enormous.

The pathophysiology of sleep-rhythm disturbance in the post-COVID state is mainly unknown and is still under research. Persistence of the organism or prolonged and dysregulated inflammation also explains sleep, circadian rhythm, and other neuropsychiatric disorders in the post-COVID period. The countermeasures against this disorder are still under research. Sleep extension, appropriate bedtime recommendations, maintaining sleep hygiene and reciprocity between physical activity and the circadian system, time-of-day-restricted feeding (TRF), chronobiology, and drugs, like melatonin, may be an approach to treat such conditions. The concept of chronology is the newer one; it identifies the body’s circadian rhythm of various biologic responses and modifies the treatment to gain optimum benefit.

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Mahmud, R. (2023). Sleep and Circadian Rhythm in Post-COVID-19 Patients. In: BaHammam, A., Pandi-Perumal, S.R., Jahrami, H. (eds) COVID-19 and Sleep: A Global Outlook. Progress in Sleep Research. Springer, Singapore. https://doi.org/10.1007/978-981-99-0240-8_12

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