Insomnia is the perception or complaint of inadequate or poor-quality sleep. Insomnia is not defined by the number of hours of sleep a person gets or how long it takes to fall asleep.
Insomnia may cause problems during the day, such as tiredness, a lack of energy, difficulty concentrating, and irritability.
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Our Insomnia Corner includes focus articles on topics important to insomniacs with a particular emphasis on the treatment of insomnia, as well as reviews of scientific studies pertinent to insomnia and its treatment.
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