About Insomnia and Causes of Insomnia

Insomnia, defined as difficulty falling asleep or staying asleep, is a common problem. More than one third of American adults experience occasional insomnia; more than one in 10 experience chronic insomnia because of one or more of the following:

- Difficulty falling asleep
- Waking up frequently during the night with difficulty returning to sleep
- Waking up too early in the morning
- Unrestful sleep

Insomnia is not defined by the number of hours of sleep a person gets or how long it takes to fall asleep. Insomnia can disturb your waking hours as well by making you feel sleepy or fatigued, negatively impacting your mood and making it hard to focus.