how long can insomnia last
Acute vs. Chronic Insomnia. Insomnia also varies in how long it lasts and how often it occurs. It can be short-term (acute insomnia) or can last a long time (chronic insomnia). It can also come and go, with periods of time when a person has no sleep problems.Acute insomnia can last from one night to a few weeks.Insomnia is called chronic when a person has insomnia at least three nights a week for a month or longer.earn more about the health consequences of sleep loss. And if you're concerned about having trouble falling asleep or staying asleep, assess your risk for a sleep disorder. You say you are able to function well with fewer than seven hours of sleep.