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- Dictionaryinsomnia/ɪnˈsɒmnɪə/
noun
- 1. habitual sleeplessness; inability to sleep.
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noun
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Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. They may have difficulty falling asleep, or staying asleep for as long as desired. Insomnia is typically followed by daytime sleepiness, low energy, irritability, and a depressed mood. It may result in an increased risk of accidents of all kinds as well as problems focusing and learning. Insomnia can be ... Wikipedia