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Hypersomnias and Sleep-Related Movement Disordersa 

Hypersomnias and Sleep-Related Movement Disordersa
Hypersomnias and Sleep-Related Movement Disordersa

Vichaya Arunthari

and Mara Cvejic

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date: 25 July 2021

Hypersomnias are disorders characterized by excessive daytime sleepiness. This symptom may occur in other disorders. Thus, the hypersomnia disorders must exclude other causes of excessive daytime sleepiness. Specifically, hypersomnias refer to disorders associated with excessive daytime sleepiness not related to sleep deprivation, disturbed nocturnal sleep, circadian rhythm disturbances, sleep-related breathing disorders, or medical condition. This chapter reviews the primary insomnias of narcolepsy and idiopathic hypersomnia. Sleep-related movement disorders, including restless legs syndrome and periodic limb movement disorder, are commonly encountered in clinical practice. These common syndromes are also reviewed in this chapter.

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