Insomnia is a very common complaint in developed societies. As people work harder and stay connected 24X7 it becomes more difficult to turn off all the noise and get some sleep. Almost ten percent of adults suffer from insomnia on a chronic basis and it is responsible for billions in lost productivity, as well as serious and even fatal accidents.
Insomnia is defined as a person having trouble falling asleep, staying asleep or waking up to early and as a result having problems functioning during the day. Insomnia is not defined as sleeping less than a certain number of hours because the amount of sleep a person needs is variable. The need for sleep also decreases with age.
Insomnia can have many different causes. Some common ones are alcohol or drug use, anxiety, caffeine and stress. It may occur on its own or along with other medical conditions such as depression or anxiety. It can last for a few nights, a few months or it can become a chronic problem. It can often be hard to diagnose the underlying problem.