Insomnia is the perception or complaint of inadequate or poor-quality sleep because of difficulty falling asleep, difficulty maintaining sleep, or waking too early in the morning. These result in the feeling that sleep is not restorative and often are associated with impaired function during the day.
Insomnia is the most common sleep disorder in the United States. About one-third of the adult population has experienced it at some time and approximately 10% have a persistent problem.
Insomnia can...
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Source: Harvard Decision Guide
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Source: ADAM Encyclopedia
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Headache sufferers often treat their pain by taking naps to sleep it off, but they run the risk of developing insomnia by disrupting their normal... Read more »