Some people wake too early in the morning and cannot fall asleep again. Of course not everyone needs the same amount of sleep. Sleep requirements normally decrease with age. Newborn babies sleep 18 hours a day, while teens need only 8 or 9 hours, and elderly people just 5 to 6 hours. Related symptoms People with insomnia often complain of anxiety, depression , and irritability.
Insomnia also contributes to traffic accidents and other injuries.
Associations Insomnia is almost always a sign of another problem - either physical or emotional. Anxiety and depression are common causes of sleep loss. Stressful situations, such as losing a loved one, encountering money problems or job loss, travel, taking an exam, or giving a speech, can all lead to transient insomnia. Long-term insomnia is one of the main symptoms of serious depressive illness, including clinical depression and bipolar disorder. The body cannot adjust quickly to abrupt changes in sleep schedules.